Description
Covid-19 Quan T-Cell (IGRA)
Sample Type:Whole Blood
Sample Required:
Blood sample
Test Time:
Results typically available within a few days.
What is the test?
The COVID-19 Quan T-Cell (IGRA) test, also known as Interferon-Gamma Release Assay, measures the T-cell immune response to the COVID-19 virus. It evaluates the presence of specific T-cells that respond to the virus, indicating prior exposure or immunity.
Test Procedure:
Blood samples are collected, and T-cell activity against COVID-19 antigens is measured in the laboratory, often utilizing interferon-gamma release as a marker of T-cell response.
When to take the test:
When assessing the T-cell response to COVID-19, particularly for evaluating prior exposure or immune response.
Who should take the test:
Individuals who have been exposed to COVID-19 or vaccinated and wish to evaluate their T-cell response to the virus.
Precautions for exceptional cases (pregnancy, etc.):
Pregnant individuals might not typically undergo this test unless there’s a specific need identified by their healthcare provider.
Frequently Asked Questions (FAQs) for COVID-19 Quan T-Cell (IGRA) Test:
Q1: How does the T-cell response differ from antibody response in COVID-19 immunity?
A: T-cells play a different role in the immune system than antibodies. While antibodies target and neutralize viruses, T-cells can also kill infected cells and support long-term immunity.
Q2: Can this test confirm recent COVID-19 infection?
A: It might indicate prior exposure or activation of T-cells in response to COVID-19, but it doesn’t specify the timing of exposure.
Q3: Is the T-cell response crucial for COVID-19 immunity?
A: Yes, T-cell responses complement antibody responses and are considered important in providing longer-term immunity.
Q4: Can T-cell testing determine vaccine effectiveness?
A: It can offer insights into the immune response post-vaccination, but other factors also contribute to vaccine effectiveness.
Q5: Is the IGRA test commonly used for COVID-19 assessment?
A: While widely used for tuberculosis, its application for COVID-19 assessment is more limited and may be used in specific research or clinical settings.
*Please note that specific testing protocols and guidelines may vary based on the latest recommendations from health authorities and regulatory agencies. It is essential to consult healthcare professionals and follow local testing guidelines for accurate and appropriate testing.
