Test Detail
Overview
Interpreting Results

Content created by

Written by
Dr. Shreya Gupta
BDS, MDS - Oral and Maxillofacial Pathology
Reviewed by
Dr. Ashish Ranjan
MBBS, MD (Pharmacology)
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Covid Antibody IgG (Qualitative)

You need to provide
Blood
This test is for
Male, Female
Test Preparation
  1. No special preparation required

Overview


What is Covid Antibody IgG (Qualitative)?

Covid-19 Antibody IgG (Qualitative) helps in detecting the presence of specific IgG antibodies against COVID- 19. Your body makes antibodies when you get an infection and these antibodies help fight against it. If you have COVID-19 antibodies in your blood, it's likely you've had the infection or have been exposed to the infection before.

Covid-19 Antibody IgG (Qualitative):

  1. Measures the presence of IgG antibodies against COVID-19

  2. Measures Neutralizing Antibody 

  3. Detects prior exposure to the virus 

  4. Detects vaccine response of the body

  5. Unit of measurement: Index value

  6. Reportable values:
    < 1.0 : Negative - Indicates absence of SARS-CoV-2 IgG Antibodies
    ≥ 1.0 : Positive - Indicates presence of SARS-CoV-2 IgG Antibodies

How does Covid-19 Antibody IgG (Qualitative) compare to Covid-19 Antibody IgG (Quantitative)?

Similarities:

  1. Measures Neutralizing Antibody 

  2. Detects prior exposure to the virus    

  3. Detects vaccine response of the body

Differences: 

  1. The Qualitative test measures the presence of antibodies against COVID-19 while the Quantitative test measures the presence and quantifies the specific amount of antibodies of COVID-19

  2. Unit of measurement: Index value for Qualitative test vs AU/ml for Quantitative test

  3. Reportable values:
    Qualitative:
    < 1.0 : Negative
    ≥ 1.0 : Positive

    Quantitative:
    < 50.0 AU/ml : Negative
    >=50.0 - 80,000 AU/ml : Positive

Note: Covid Antibody IgG (Qualitative) test only helps in detecting the presence of antibodies and is not meant to be used for diagnosis of active Covid-19 infection.

Interpreting Covid Antibody IgG (Qualitative) results


Interpretations

< 1.0 : Negative - Indicates absence of SARS-CoV-2 IgG Antibodies

≥ 1.0 : Positive - Indicates presence of SARS-CoV-2 IgG Antibodies


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