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GTR Home > > COVID 19 Antibodies for IgG, IgA, and IgM - KSL Chemiluminescence Assay


Test order codeHelp: 231

Test name


COVID 19 Antibodies for IgG, IgA, and IgM - KSL Chemiluminescence Assay

Purpose of the test


This is a clinical microbial test intended for Help: Screening



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How to order


Online through physician request drawn at the office or in one of our collection sites CPT Code: 86769 x3
Order URL Help: https://www.ksldx.com/covid-19-antibody-test

Specimen source


Sample requirements

Serum or plasma samples are recommended. The recommended protocol for novel coronavirus inactivation: 1) 56°C for 30 min or 2) Disinfectant: (Fat solvents such as diethyl ether, 75% ethyl alcohol, bleach, peracetic acid, chloroform). Avoid using hemolytic specimen, lipemic specimen, icteric specimens and polluted specimen. Sera samples can be temporarily stored at - 20°C for no longer than 8 months.

Turnaround time

24-48 hours


OAntibody assay
Chemiluminescent Immunoassay (CIA)

Summary of what is tested

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Clinical utility


Not provided

Clinical validity


Not provided

Comments about the test interpretation (e.g. clinical implication of test results)

Positive results to antibodies against SARS-CoV-2 are generally indicative of an individual’s current or prior infection with the SARS-Cov-2 virus. However, the duration of these antibodies remaining in circulation has not yet been established. These test results should always be considered in the context of a patient’s clinical history, physical examination, epidemiologic exposures, and vaccination history before making the final diagnosis. IgM isotype antibodies develop within 5 to 7 days indicating recent exposure to the virus. IgG isotype antibodies develop after 10 days and remain in circulation longer. It may indicate past exposure or vaccine mediated immune response. IgA isotype antibody development is variable in its response and may indicate past exposure or vaccine-mediated immune response.

Clinical resources

Practice guidelines

  • NICE, 2022
    UK NICE Guideline NG191, COVID-19 rapid guideline: managing COVID-19

Consumer resources

IMPORTANT NOTE: NIH does not independently verify information submitted to the GTR; it relies on submitters to provide information that is accurate and not misleading. NIH makes no endorsements of tests or laboratories listed in the GTR. GTR is not a substitute for medical advice. Patients and consumers with specific questions about a genetic test should contact a health care provider or a genetics professional.