Quest Diagnostics Post-COVID-19 Expanded Test Panel
Type
Blood Testing
Biomarkers
4
Duration
30 min
Results
3 days
Comprehensive blood and urine test to determine if lingering symptoms are due to post-COVID-19 infection or another underlying health issue.
This in-depth panel is for those with ongoing symptoms caused or aggravated by COVID-19. It helps you and your doctor understand if your symptoms are potentially related to a past COVID-19 infection or another underlying health condition. The panel measures various biomarkers related to metabolic function, blood health, inflammation, liver function, thyroid function, and vitamin levels. Results can inform discussions with your doctor about potential treatment pathways. This panel does NOT test for or diagnose COVID-19.
Key Details
- Type
- Antibody detection (not active infection)
- Fasting Required
- No
- Sample Type
- Blood draw
- Turnaround
- 1–3 business days
- Timing
- Test 2–3 weeks after exposure/vaccination
Who Is This For?
Anyone who wants to check their antibody levels after vaccination or infection. People who suspect they had COVID-19 or another respiratory infection but were never tested. Those interested in monitoring their antibody levels over time. Healthcare workers and others in high-exposure settings.
What's Included
Preparation Required
No fasting required. No special preparation needed. Antibody tests should be performed at least 2–3 weeks after symptom onset or vaccination for accurate results.
Biomarkers Tested
4A protein produced by the liver in response to inflammation. CRP rises rapidly during infection, injury, or inflammatory conditions. It's a general marker — elevated CRP signals inflammation but doesn't pinpoint the source.
The primary iron storage protein. Ferritin reflects total body iron stores and is the first marker to drop in iron deficiency. However, ferritin also rises with inflammation, infection, and liver disease, which can mask true iron deficiency.
Essential for nerve function, DNA synthesis, and red blood cell formation. B12 deficiency can cause anemia, neuropathy, fatigue, and cognitive impairment. Common in vegans, vegetarians, older adults, and those taking metformin or acid-reducing medications.
The best indicator of overall vitamin D status. Vitamin D is essential for calcium absorption, bone health, immune function, and mood regulation. Deficiency is extremely common, especially in northern latitudes, and linked to increased disease risk.
Includes a $6.00 Physician Service Fee. Klarna/Affirm payment options available.
- Category
- Diagnostic
- Sample Type
- Blood draw
- Duration
- 30 min
- Results
- 3 days