LabCorp IgM

001768: Immunoglobulins, Quantitative, IgA, IgG, IgM Labcor

  1. Labcorp test details for Immunoglobulins, Quantitative, IgA, IgG, IgM
  2. Labcorp test details for Immunoglobulins, Quantitative, IgA, IgE, IgG, IgM
  3. Ali NJ, Sillis M, Andrews BE, Jenkins PF, Harrison BD. The clinical spectrum and diagnosis of Mycoplasma pneumoniae infection. Q J Med. 1986 Mar; 58 (227):241-251. PubMed 3737868. Levy M, Shear NH. Mycoplasma pneumoniae infections and Stevens-Johnson syndrome: Report of eight cases and review of the literature
  4. Combination of IgM and IgM/IgG antibody tests with reflex of positive results to Line blot confirmation. This is the most comprehensive LabCorp profile for Lyme disease testing, providing the broadest window of time for detection and confirmation
  5. Labcorp and its Specialty Testing Group, a fully integrated portfolio of specialty and esoteric testing laboratories. Immunoglobulin M heavy chain. Limitations. Use of fixatives other than 10% formalin may not yield equivalent or satisfactory results. Methodology. Immunohistochemistry (IHC
  6. 0.4 mL) for each assay

Build ???version-number???.???build-number??? ???build-date??? | www.labcorpbeacon.co Equivocal: Questionable presence of Leptospira IgM antibody detected. Repeat testing in 10-14 days may be helpful. Positive: Presence of IgM antibody to Leptospira detected, suggestive of a current or recent infection. Interpretive Data Background information for test. May include disease information, patient result explanation, recommendations. Normal range/expected value (s) for a specific disease state. May also include abnormal ranges. Test Number. Components. Reference Interval. 2001633. Lymphocytic Choriomeningitis (LCM) Virus Antibody, IgG. < 1:10 Negative - No significant level of LCM virus IgG antibody detected. ≥ 1:10 Positive - Presence of IgG antibody to LCM virus.

Immunoglobulins, Quantitative, IgA, IgE, IgG, IgM - Labcor

Labcorp Patient Portal. It's easy to manage your health with Labcorp Patient. Make an appointment. View test results. Pay your bills. Simple and convenient. Create a Labcorp Patient account. Create an Account. Download the Labcorp Patient mobile app Equivocal - Questionable presence of IgM antibody to Francisella tularensis. Repeat testing in 10-14 days may be helpful. 16 U/mL or greater: Positive - Presence of IgM antibody to Francisella tularensis detected, suggestive of current or recent exposure/immunization LABCORP SERVICE ANNOUNCEMENT LabCorp's COVID-19 Serological Antibody Tests Page 2 of 2 Test Options IgG IgM IgA Test Number 164055 SARS-CoV-2 Antibody, IgM SARS-CoV-2 Antibody, IgA Test Name SARS-CoV-2 Antibody, IgG Specimen Requirements Serum from venous blood draw in serum gel tube or a red top tube. Sample volume is 0.5 mL (min 0.4 mL) for. LabCorp test details for Beta-2 Glycoprotein 1 Antibodies IgA, IgG, IgM

163212: Mycoplasma pneumoniae Antibodies, IgM Labcor

Blood Testing. ViroMed is an FDA-registered blood establishment that offers confirmatory or additional infectious disease testing to blood and plasma centers including, but not limited to LABCORP SEROLOGY TESTING FOR SARSCoV˜2 ANTIBODIES IgG, IgA, IgM˛ • The FDA guidance describes a policy regarding the use of serologic testing without an emergency use authorization (EUA). The following information is provided pursuant to that guidance: • These tests have not been reviewed by the FDA HSV, IgM I/II Combination (LabCorp). Get know how much does lab test cost. Direct access testing with or without insurance. HSV, IgM I/II Combination in online lab tests stores If you need more than just HSV, IgM I/II Combination lab test - add more tests one by one This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes. Alternative Name (s) MAG-SGPG Antibody IgM,MAG, IgM,Sulfated Glucuronic. LOINC® Codes, Performing Laboratory. Service Area must be determined

258004: Lyme Disease Antibodies, Total and IgM - Labcor

May have diagnostic relevance in multifocal motor neuropathy (MMN), Guillain-Barré syndrome (GBS), and Miller Fisher syndrome (MFS). For a more comprehensive ganglioside antibody panel when evaluating patients with autoimmune neuropathies, refer to Ganglioside (Asialo-GM1, GM1, GM2, GD1a, GD1b, and GQ1b) Antibodies (0051033). Test by itself is not diagnostic and should be used in conjunction. This is a test for Lyme called a Western Blot. It consists of IgG bands and IgM bands. It is run via Labcorp and it is considered to be self pay (no insurance). Nutritionally Yours is a Lyme Literate Clinic. If the test is positive we will provide you with a natural protocol to support immune health Lyme IgG/IgM Ab <0.91 ISR 0.00 - 0.90 01 Negative <0.91 Equivocal 0.91 - 1.09 Positive >1.09 01 BN LabCorp Burlington 1447 York Court, Burlington, NC 27215-3361 Dir: Sanjai Nagendra, MD For inquiries, the physician may contact Branch: 800-222-7566 Lab: 336-436-2762 1.0

zzIO-198: IgM by IHC Integrated Oncology Laboratory

Step 1: Add to cart - for each panel below click Add to Cart button and then close the new tab. Click Add to Cart then close the new tab (Lyme Disease Total and IgM Antibody Blood Test $155.00) Step 2: Checkout - go to Checkout and complete the checkout process there. Your total price should be $155.00. $159.00 Lyme Disease Ab, Quant, IgM 1.86 High index 0.00 - 0.79 01 Negative <0.80 Equivocal 0.80 - 1.19 Positive >1.19 IgM levels may peak at 3-6 weeks post infection, then gradually decline. 01 BN LabCorp Burlington 1447 York Court, Burlington, NC 27215-3361 Dir: Sanjai Nagendra, M

COVID-19 Testing Options - ThermoGenesis Holdings, Inc

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  1. e current, or recent infection. To monitor the antibody concentrations in the body to track infection
  2. The Toxoplasmosis IgM test is used to aid in the diagnosis of a recent or acute toxoplasma infection. Request A Test makes it easy to order affordable lab testing. We work with 1000's on nationwide lab locations for your convenience
  3. 14211-7. 2010157. Hepatitis E Virus Ab, IgM. 14212-5. 2012024. Hepatitis E Virus Abs, IgG/IgM Interp. 58936-6. * Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map
  4. The gamma globulin band as seen in conventional serum protein electrophoresis consists of 5 immunoglobulins. In normal serum, about 80% is immunoglobulin G (IgG), 15% is immunoglobulin A (IgA), 5% is immunoglobulin M (IgM), 0.2% is immunoglobulin
  5. Labcorp Specialty Labs Labcorp. Our global life sciences company brings diagnostic testing & drug development together. Cytomegalovirus IgM antibody, Fluorescent treponemal antibodies (FTA-Abs), Hepatitis B core IgM antibody, Hepatitis B surface antigen neutralization, HIV-1 Western blot, HIV-2 immunoblot, HTLV-I/II antibody, HTLV-I/II.
  6. Immunoglobulin, IgM. $99. LabCorp $59. Quest. Sample Results. Test Details. Testing by CLIA approved lab: LabCorp or Quest Diagnostics. As one of the 5 immunoglobulins found in the blood ,it is the first or primary immunoglobulin produced following exposure to an antigen. IgM antibodies are the largest and are the first antibody made in.

Leptospira Antibody, IgM by Dot Blot ARUP Laboratories

Labcorp Drug Development (formerly Covance) is a contract research organization (CRO) that provides drug development services with the goal of advancing health. We have supported the development of the top 50 pharmaceutical drugs on the market. As a full-service CRO, we are dedicated to providing nonclinical, preclinical, clinical, commercialization and regulatory consulting, research and. LabCorp says it has 200,000 self-collection kits available for the general public, while Quest said it would work with Ortho Clinical Diagnostics to expand antibody testing to more than 20 of its.

Lymphocytic Choriomeningitis (LCM) Virus Antibodies, IgG & Ig

LymeMD: 2017

Labcorp Patient Porta

Description: Herpes 1&2 IgM Blood Test. The Herpes 1&2 IgM test is typically ordered as a screening for recent exposure to the Herpes Simplex Virus.This test looks for IgM antibodies which usually appear shortly after infection. IgM antibodies typically begin to be detectable at 5-10 days after infection and phase out within a few months. A second type of antibody known as IgG antibodies will. LEPDT : Leptospirosis is a zoonotic disease of worldwide prevalence, though the majority of infections occur in warm, tropical climates. Wild mammals, typically rodents, are the primary, natural reservoir for pathogenic strains of Leptospira, however, domestic animals (eg, dogs) also represent a major source of human infection. Leptospira are Gram-negative spirochetes with at least 20. The Hepatitis B Core Antibody Differentiation Blood Test, IgG and IgM assesses Hepatitis B virus infection. Quest; LabCorp; Buy LabCorp: $158.00 Test Code: 098418. Also Known As: Anti-HBc IgG/IgM Diff, Antibody to Hepatitis B Core Antigen IgG/IgM Diff, HBcAb, IgG/IgM Diff Cytomegalovirus Antibodies, IgM (CMV) $199. LabCorp $199. Quest. Sample Results. Test Details. Testing by CLIA approved lab: LabCorp or Quest Diagnostics. used to measure the level of IgM antibodies in an individuals blood. to detect the presence of recent exposure or current infection Hepatitis E Blood Test, IgM. Hepatitis E Virus (HEV) is a major cause of enteric non-A hepatitis worldwide. HEV IgM is typically detected within 2-4 weeks after infection, and then persists for about two months. Quest. LabCorp

Labcorp Patient Porta The HSV 1 and 2 blood test is used in aiding in the diagnosis of infection with herpes simplex virus. Quest. LabCorp. Test Code: 164806. Also Known As: Herpesvirus Hominis Types 1 and 2, IgM; HSV Type 1 and Type 2, IgM. Methodology: Enzyme-linked immunosorbent assay (ELISA) Preparation: No special preparation required. Test Results: 3-4 days As the immune system fights the infection, IgM antibodies against dengue virus are detectable starting 4-5 days after onset of symptoms and are reliably detectable for approximately 12 weeks. Combined testing with a nucleic acid amplification test (NAAT) and MAC-ELISA usually provides a diagnostic result during the first 1-7 days of illness

Candida IgA, IgM, IgG Blood. The Candida blood test measures candida antibodies found in our blood. Candida is a yeast that needs to be treated, when found in abnormal levels. When measuring the IgA, IgM and IgG candida antibodies, you can more effectively assess the presence of the infection and how your immune system is responding to it How the Test is Done. Doctors often measure IgA, IgG, and IgM together to get a snapshot of your immune function. A lab tech will usually take a sample of your blood by inserting a needle into a. LabCorp on Thursday launched a new coronavirus blood test with a twist -- instead of simply looking for antibodies produced by the immune system in response to SARS-CoV-2, the PhenoSense assay. Version 2.70 47236-5Treponema pallidum IgG+IgM Ab [Presence] in Serum by ImmunoassayActive Part Description LP14042-3 Treponema pallidum Treponema pallidum is a spirochaete bacterium. Pathogenic treponemes are classified based upon their clinical manifestations in humans: venereal syphilis, yaws, endemic syphilis and pinta. Nonpathogenic treponemes are often part of the normal flora of the. Description: H Pylori IgA IgG IgM Blood Test. This test measures 3 types of antibodies to Helicobacter Pylori (H Pylori), IgA, IgM, and IgG.H Pylori is a bacteria commonly found in the stomach.It weakens the stomach's natural protective lining making it more susceptible to damage from gastric acid.This can lead to the development of ulcers and in time, increase the risk of developing stomach.

Francisella tularensis Antibodies, IgG and IgM with Reflex

Description: Candida IgA, IgM, IgG Blood Test. This candida test is used to screen for antibodies the body develops in response to Systemic Candidiasis or Candida.Candida is another name for yeast, a fungus which is normally found in small amounts in the body.The immune system normally keeps Candida under control but in cases where a person is sick or taking antibiotics, the yeast may spread. Expanding Access to Tests Through LabCorp's Wide Network of Doctors, Healthcare Providers, and Now Online. BURLINGTON, N.C.--(BUSINESS WIRE)--May 5, 2020-- LabCorp (NYSE: LH), a leading global life sciences company that is deeply integrated in guiding patient care, today announced that its COVID-19 Immunoglobulin G (IgG) antibody test is now available for individuals through LabCorp.com Objective Coronavirus disease 2019 (COVID-19) has become pandemic in the world. The need for IgG-IgM combined antibody test is booming, but data on diagnostic indexes evaluation was inadequate. The aim of this study was to evaluate diagnostic indexes of a rapid IgG-IgM combined antibody test for SARS-CoV-2. Methods A total of 179 patients were enrolled

Immunoglobulin M (IgM) - IgM antibodies are produced as a body's first response to a new infection or to a new non-self antigen, providing short-term protection. They increase for several weeks and then decline as IgG production begins. Immunoglobulin G (IgG) - About 70-80% of the immunoglobulins in the blood are IgG Pixel by Labcorp Support. Pixel by Labcorp Support. Categories. COVID-19 Test (At-Home Kit) General. Physician Services. Payment & Billing. Visiting a Labcorp Location. Results CaroMont LAB1872 West Nile Virus Antibodies, IgG & IgM Sunquest Code:WESTN Place Of Service:LabCorp CaroMont LAB252 Wet Prep: Trich & Yst Sunquest Code:WP 87210 CaroMont LAB299 White Blood Cell Count,Blood Sunquest Code:WBC 85048 CaroMont LAB3297 Whole Blood Lytes, Glucose Sunquest Code:EDPAN 84295 84132 82435 8294 Interestingly, HSV IgM testing was associated with only a 2.3% positivity rate, and among the patients that had both HSV IgM and HSV RT-PCR ordered, 50% of them were RT-PCR positive and HSV IgM negative. Ultimately, we concluded that HSV IgM testing is over-utilized with negligible added value to patient care CMVP : Cytomegalovirus (CMV) is a member of the Herpesviridae family of viruses and usually causes asymptomatic infection after which it remains latent in patients, primarily within bone marrow derived cells. Primary CMV infection in immunocompetent individuals may manifest as a mononucleosis-type syndrome, similar to primary Epstein-Barr virus infection, with fever, malaise and lymphadenopathy

500590 Beta-2 Glycoprotein 1 Antibodies IgA, IgG, IgM

Browse our dedicated FAQ page, send us a chat message, or shoot us an email at support@pixel.labcorp.com. We're also available to talk Monday - Friday from 9a-5p Eastern at (800) 833-3935. Antibody Testing for COVID-19. This test looks in the blood for proteins produced by the body as it fights off COVID-19. It can tell you if you've. Objectives: This study aimed to determine the IgM and IgG responses against severe acute respiratory syndrome coronavirus (SARS-CoV)-2 in coronavirus disease 2019 (COVID-19) patients with varying illness severities. Methods: IgM and IgG antibody levels were assessed via chemiluminescence immunoassay in 338 COVID-19 patients. Results: IgM levels increased during the first week after SARS-CoV-2.

Blood Testing ViroMe

The COVID-19 IgM/IgG Rapid Test by BioMedomics, Inc. demonstrates a combined sensitivity and specificity of 100% and ~99% respectively, making it one of the most accurate and reliable tests in the world. There is a critical, global need for serology assays that can complement nucleic acid (PCR) tests for diagnosing COVID-19 infection There are an emerging amount of IgG and IgM antibody tests for COVID-19 that are being developed and presented to clinicians. Currently, the most widely used method for diagnosing COVID-19 is the standard M PCR. This test is the most sensitive testing method and can identify the virus before symptoms are expressed Labcorp CEO says Covid vaccine recipients don't need to be tested for antibodies afterward Published Tue, Jan 12 2021 7:00 PM EST Updated Wed, Jan 13 2021 10:41 AM EST Kevin Stankiewicz @kevin_stan

HSV, IgM I/II Combination LabCorp - Find Lab Tests Onlin

People not presently experiencing signs or symptoms may undergo an IgG or IgG/IgM antibody serology test via blood draw. The antibody tests from Quest Diagnostics are intended as aids in identifying individuals with an adaptive immune response to COVID-19, indicating recent or prior infection, versus the molecular test which is used to help identify an active infection Positive IgM results are consistent with recent infection, although false-positives may occur (see Cautions). Negative results do not rule out the presence of acute or ongoing Mycoplasma pneumoniae-associated disease.The specimen may have been drawn before the appearance of detectable antibodies The immunoglobulin M (IgM) antibody is the largest among the five major types of immunoglobulins and is the first antibody that is created by the body to fight infections. The IgM antibody recognizes a large variety of pathogenic antigens and plays an important role in body immunity

IgM antibodies are the first antibodies to be produced in the body in response to an infection, and is produced in great quantity. IgM antibodies are large, up to six times larger than the IgG antibodies. IgM antibodies, when present in high numbers, represent a new active infection or an existing infection that has become reactivated.. IgM test methods and kits vary considerably in their sensitivity and specificity with some indirect EIA and immunofluorescent assays detecting as few as 12%-15% of confirmed mumps cases (Rota et al 2013). IgM capture ELISA is the most sensitive serologic method detecting 46% -71% of RT- PCR confirmed cases, but has limited availability (Rota.

COVID-19 lgG & IgM Antibodies Blood Draw The COVID-19 Antibodies is a serological test that detects human antibodies (proteins belonging to the immunoglobulin class), IgG & IgM. This test is done by a traditional blood draw. Who can get tested? This test is for individuals who would like to know if they have ha The rapid test for SARS-CoV-2 diagnosis provides qualitative detection of IgG and/or IgM from human serum, whole blood or plasma in approximately 10-15 minutes. The rapid tests are based on the principle of lateral flow immunoassay chromatography and are available in cassette form. The test is based on the separation of the components of a. IgM antibodies are the first to be produced by the body in response to a CMV infection. They are usually present in most individuals within 7-14 days after the initial exposure. IgM antibody levels increase for a short time period and then begin to decline. Usually in 2-3 months after the initial exposure, the level of CMV IgM antibody usually.

IMMG : The gamma globulin band as seen in conventional serum protein electrophoresis consists of 5 immunoglobulins. In normal serum, about 80% is immunoglobulin G (IgG), 15% is immunoglobulin A (IgA), 5% is immunoglobulin M (IgM), 0.2% is immunoglobulin D (IgD), and a trace is immunoglobulin E (IgE). Elevations of IgG, IgA, and IgM may be due to polyclonal immunoglobulin production Pixel by Labcorp™'s parent company, Laboratory Corporation of America Holdings (Labcorp), is now permitted by the U.S. Food and Drug Administration (FDA) to conduct COVID-19 testing of samples obtained from a designated self-collection kit. 1 With this new emergency use authorization from the FDA, Pixel by Labcorp is proud to introduce self collection kits for COVID-19 testing

Analysis of SARS-CoV-2 RBD-specific IgA, IgM, and IgG antibodies in 87 COVID-19 patients. Testing results of RBD-specific IgA (a), IgM (b), and IgG (c) kits using 330 healthy sera, 138 sera from. A lab coordinator at Salt Lake City's Fourth Street Clinic preps a patient to draw blood for laboratory testing. ARUP has renewed its agreement to provide testing free of charge to the clinic, which provides healthcare to homeless men, women, and children. Photo credit: Fourth Street Clinic. June 10, 2021 IgM antibodies can be detected as soon as 2 weeks post exposure. This test is highly accurate at 3-6 weeks post exposure and is 99% conclusive after 12 weeks. Hepatitis A is a highly infectious liver disease that affects the function of the liver. The virus is spread through stool from an infected person. It is considered a sexually transmitted. Test Includes: Mumps IgM and IgG reported as Negative, Positive or Equivocal with concentration. Logistics Test Indications: Aid in the diagnosis of acute mumps infection and determine immunity to mumps virus. Lab Testing Sections: Serology - Sendouts Referred to: LabCorp/Viromed (Test# 160499 and 096552) Phone Numbers: MIN Lab: 612 -813 628

Myelin Associated Glycoprotein (MAG)-SGPG Antibody (IgM

Lyme disease is a bacterial infection caused by the bacterium borrelia burgdorferi, and it's passed to humans through the bite of infected ticks but especially the blacklegged tick.. These ticks normally dwell on animals like deer, horses, chipmunks, squirrels, and many other creatures that are often found in wooded areas LabCorp is seeking a Clinical Laboratory Supervisor to join our Immunology/Serology There are also 14 infectious disease assays performed on the Liaison XL on this shift. Covid Igg, Igm, and.

COVID-19 Virus DiseaseSTD Testing Example Test Results | Health Testing Centers

The antibody response to SARS-CoV-2 usually starts with IgM and/or IgA being detectable first, followed by the longer-lasting and more specific IgG. 1 Data suggest that IgM antibodies can be detected within a few days post-infection and IgG antibodies will be detectable from some individuals by 10 days after COVID-19 symptom onset. 3-8 However. Test Name: DENGUE FEVER ANTIBODIES (IGG/IGM) General Information Lab Order Codes: DFAB Synonyms: Dengue Fever Ab Panel CPT Codes: 86790 -Dengue Fever IgG 86790 - Dengue Fever IgM Test Includes: Dengue Fever IgG and IgM levels. Logistics Test Indications: Useful in confirming the diagnosis of Dengue Fever. Lab Testing Sections: Serology. A technician will take a bit of your blood, like through a finger prick. The test looks for one or both kinds of antibodies to SARS-CoV-2, the virus that causes COVID-19: IgM antibodies, which. This test detects IgM and IgG class antibodies to Francisella tularensis in serum and may be used as an aid for the diagnosis of tularemia. Serologic testing should be performed alongside other diagnostic methods, including culture of appropriate specimens. ( Note: please notify microbiology laboratory in cases of suspected F tularensis to. Test Includes: Mumps IgM reported as Negative, Positive or Equivocal with concentration. Logistics Test Indications: Aid in the diagnosis of acute mumps infection. Lab Testing Sections: Serology - Sendouts Referred to: LabCorp/Viromed (Test: 160499) Phone Numbers: MIN Lab: 612 -813 6280 STP Lab: 651-220-6550 Test Availability: Daily, 24 hour

What is the methodology for Labcorp's COVID-19 test? Is this test authorized by the FDA? How accurate is this test? What is a false negative result? What is a false positive result? How does the Pixel by Labcorp™ process work? Can I purchase a kit for travel? Can I share an account with a family member? Can I order multiple kits at one time Scale up COVID-19 antibody testing. An in vitro diagnostic rapid test for the qualitative detection of IgG and IgM antibodies to SARS-CoV-2 in human serum, plasma, venous and fingerstick whole blood.. Intended to be used as an aid in the diagnosis of SARS-CoV-2 infection. The product may be used in any laboratory and non-laboratory environment that meets the requirements specified in the. IgM: Histone H3; GD1a ganglioside IgG: GM1 ganglioside or Sulfatide Selective antibody patterns with specificity for motor neuropathies IgM vs. GM1 > 2,000 IgM vs NP-9 antigen > 3,000 IgG vs GM1 > 2,000 IgM vs NS6S > 15,000 Rationale. Selectivity of anti-GM1 antibody bindin

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Hepatitis A is a highly contagious liver infection caused by the hepatitis A virus (HAV). When the body is infected with HAV, it defends itself by producing two types of antibodies in sequence: first, IgM, which appears 2 to 4 weeks after infection and is present for 2 to 6 months, then IgG, which appears a few weeks after IgM and is present for the rest of the person's life Difference Between Antibody Test IgG and IgM When an individual is infected with a virus, like the SARS-Cov-2 which causes COVID-19, the person's body starts to develop an immune response naturally by building antibodies to the virus. The antibodies attack the virus and eliminate the virus from the system. That is the basics of immunology. So, antibodies are nothing but large protein [ Serology to Diagnose Mumps. Table with expected IgM results by vaccination status. Page last reviewed: March 8, 2021. Content source: National Center for Immunization and Respiratory Diseases (NCIRD), Division of Viral Diseases Serology testing for SARS-CoV-2 continues to be in high demand because it can help to better quantify the total number of cases of COVID-19 to date. This type of testing is valuable because it can identify those who may have been asymptomatic and recovered. Serology tests measure the levels of specific antibodies in the blood, revealing whether. June 12, 2020 . James X. Li, Ph.D. Chief Executive Officer . 76 TW Alexander Drive . Research Triangle Park, NC 27709 . Device: qSARS-CoV-2 IgG/IgM Rapid Tes Overall, of the 94 patients referred for possible Lyme disease by another physician, 23 (24.5%) had a false positive IgM immunoblot compared with 27 (30.7%) of the 88 self-referred patients, p 0.41. At least 39 (78.0%) of the 50 patients with a false positive IgM immunoblot had received antibiotic therapy because of this finding