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Hepatitis E Virus RNA (Quantitative) – Serum/Plasma

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

This test detects the presence of Hepatitis E Virus RNA in your blood, helping doctors determine if you have an active infection caused by the HEV virus.

Quick summary

["HEV RNA testing helps diagnose acute hepatitis E, especially in travelers or those with risk factors."]

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

Key facts at a glance

LOINC
74858-2
Short code
HEV 1+2+3+4 RNA SerPl Donr Ql NAA+probe
Synonyms
HEV 1+2+3+4 RNA SerPl Donr Ql NAA+probe
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
probe-amp-tar
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

Why This Test Matters

Hepatitis E is a viral liver infection often spread through contaminated water or food. While it’s usually mild, it can be serious in pregnant women or those with weakened immune systems. This test checks for the virus’s genetic material (RNA) in your blood, confirming an active infection.

What to Expect Before the Test

No special preparation is needed. You’ll provide a blood sample (usually drawn from your arm) in a serum or plasma tube. The lab will analyze it for HEV RNA using advanced techniques like polymerase chain reaction (PCR).

What the Results Mean

A positive result means the virus is actively replicating in your body and you likely have hepatitis E. A negative result suggests no active infection is detected at this time, but you may still be at risk if exposed recently.

When You Might Need This Test

Your doctor may order this test if you have symptoms like jaundice (yellow skin), fatigue, abdominal pain, or fever—especially if you’ve traveled to areas with poor sanitation or have risk factors like liver disease.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

HEV RNA testing is critical for diagnosing acute hepatitis E, guiding treatment decisions, and preventing complications. Early detection allows for monitoring and support, particularly for high-risk groups. Chronic infection is rare but can occur in immunocompromised individuals.

Short name

HEV RNA

Frequently asked questions

How long does it take to get results?
Results are typically available within 2–5 business days, depending on lab processing times. Your doctor will contact you with the outcome.
Can I have this test if I’ve already had hepatitis E?
Yes, this test specifically looks for active viral RNA, not past infection markers like antibodies. If you’ve recovered, you may test negative now but could still be at risk of reinfection.
What if my results are positive?
If positive, your doctor will likely recommend rest, hydration, and possibly antiviral medications to support your liver. Follow-up tests may be needed to monitor recovery.
  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