Initial Evaluation for COVID-19 Infection (Serology Panel)
This blood test checks for antibodies that your immune system may have produced in response to COVID-19 infection. Antibodies can help your body fight off the virus and may remain in your system for some time after recovery.
["This test helps determine if you’ve had prior exposure to COVID-19, even if you didn’t experience symptoms."]
Key facts at a glance
- LOINC
- 94722-6
- Short code
- COVID-19 Initial Eval form
- Synonyms
- COVID-19 Initial Eval form
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- role
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
What Does This Test Measure?
The test looks for specific antibodies (immunoglobulins) in your blood that target the SARS-CoV-2 virus responsible for COVID-19. These antibodies are part of your immune response and can indicate past exposure. The test may include multiple antibody types, such as IgM and IgG, which develop at different times after infection.
Why Might Your Doctor Order This Test?
Your healthcare provider may recommend this test if you’ve had symptoms of COVID-19, were exposed to someone with the virus, or if you’re in a setting where COVID-19 testing is routinely offered. It can also be used for screening in certain populations, such as before returning to work or travel.
How Is the Test Performed?
A small blood sample is taken from your arm using a needle. The sample is then sent to a lab for analysis. The results are typically available within a few days, depending on the lab’s processing time.
What Are the Possible Results?
A positive result means your blood contains antibodies against COVID-19, suggesting you likely had an infection at some point. A negative result means the antibodies were not detected in your sample, which could mean you were never infected or the test was taken too early after exposure. False negatives can occur if testing was done too soon after exposure.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
A positive antibody test does not necessarily mean you are currently infected with COVID-19. Instead, it indicates past exposure and immunity, which may protect you from future infections. However, if you’ve been exposed recently, you may still need to monitor for symptoms or take precautions. A negative test does not guarantee you are not infected at the time of testing, especially if you’ve been exposed within a short timeframe. Always follow up with your healthcare provider for personalized guidance based on your situation.
Short name
COVID-19 Antibody Screen
Frequently asked questions
How soon after exposure might I get a positive antibody test result?
Can I get a false negative result on this antibody test?
What does it mean if my antibody test is positive but I never had symptoms?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy