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SARS-CoV-2 Nucleic Acid Detection (Qualitative) in Respiratory Specimen

Published: August 9, 2026Updated: August 16, 2026

This test checks for the presence of genetic material from the virus that causes COVID-19 in a sample taken from your respiratory tract, such as nasal or throat swabs.

Quick summary

["Determines if you may have been exposed to COVID-19 recently, even if you haven’t yet shown symptoms."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
33970-5
Short code
SARS-CoV Urb Ab Ser Ql IF
Synonyms
SARS-CoV Urb Ab Ser Ql IF
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
if
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

How the Test Works

The test uses a specialized laboratory method to detect the virus’s genetic material (RNA) in your sample. If the virus is present, the test will identify it, helping healthcare providers assess your risk and guide further care.

What to Expect Before the Test

You may receive instructions to avoid certain medications or activities before testing, but this is rare for this type of test. Bring any recent medical records or questions to your appointment.

What to Expect During the Test

A healthcare provider will collect a sample from your nose or throat using a swab. You may feel slight discomfort, but it usually takes only a few seconds. The sample is then sent to a lab for analysis.

What to Expect After the Test

Results are typically available within 24 to 48 hours. If you receive a positive result, follow your healthcare provider’s guidance for next steps, such as isolation or further testing.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

SARS-CoV-2 RNA Test

Frequently asked questions

Why might I need this test?
Your healthcare provider may recommend this test if you have symptoms of COVID-19, have been exposed to someone with the virus, or are part of a group at higher risk for infection.
What does a positive result mean?
A positive result means the test detected the virus’s genetic material, suggesting you may have been infected recently. This does not confirm a diagnosis of COVID-19 without clinical correlation, as other viruses can sometimes cause similar results.
Can I get this test at home?
Some at-home tests are available for self-collection, but these are typically less sensitive than lab-based tests. Always consult your healthcare provider before using an at-home test to ensure accuracy and proper interpretation.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

Medical Disclaimer

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