What this test measures
The hepatitis E IgM rapid test is an immunochromatographic lateral-flow assay that detects IgM antibody to hepatitis E virus in serum, plasma or whole blood. Results appear visually in 15–20 minutes — two lines mean reactive, one line means non-reactive.
The test detects the same antibody as the lab ELISA/CLIA anti-HEV IgM. Sensitivity is typically ~90–95%; specificity > 95%. A reactive result strongly suggests acute hepatitis E; in pregnancy or severe disease, confirmation by ELISA is recommended.
Why it matters
Hepatitis E is the leading cause of acute viral hepatitis in Indian adults and a major cause of monsoon-related jaundice outbreaks. During large outbreaks (waterborne contamination), same-day diagnosis is needed for individual care, contact tracing, and public-health response. The rapid test fits this need.
The most clinically important group is pregnant women in the third trimester, where HEV causes acute liver failure with 15–25% mortality. Any pregnant woman with acute jaundice in India should be screened — preferably with both rapid and lab tests — without delay. Outbreak settings also use the rapid test for field surveillance.
How to prepare
No fasting required. The test uses serum, plasma or whole blood. Always mention pregnancy status — it changes urgency and management.
Markers & reference ranges
Reference ranges below are typical adult values. Your lab's reported range may differ slightly based on the assay platform and patient demographics — always read your report against the range printed on it.
| Marker | Normal range | If low | If high |
|---|---|---|---|
| Anti-HEV IgM (Rapid) (Reactive / Non-reactive)[1][2] | Non-reactive (Negative) | Non-reactive — no detectable IgM. Does not fully rule out very early acute HEV; if clinical suspicion is high, confirm with ELISA anti-HEV IgM and consider HEV RNA. | Reactive — likely acute hepatitis E infection. Confirm with ELISA/CLIA in pregnant, immunocompromised or severe cases. Hospital admission and close LFT/INR monitoring for pregnancy or signs of acute liver failure. |
When to use the HEV IgM rapid test
| Scenario | Rapid card | Lab ELISA/CLIA |
|---|---|---|
| Outbreak triage / field camp | Yes — preferred | Sample subset for confirmation |
| Acute jaundice in OPD | Yes — initial screen | Confirm if borderline |
| Pregnant woman with jaundice | Initial screen | Always confirm by ELISA |
| Suspected acute liver failure | Initial screen | Always confirm; consider HEV RNA |
| Immunocompromised patient | Less reliable | ELISA + HEV RNA preferred |
Frequently asked questions
Is the rapid HEV test reliable in pregnancy?
A reactive result is reliable, but a negative result in a pregnant woman with jaundice should be confirmed by ELISA. The stakes are too high for false reassurance.
How soon after symptoms can the rapid test detect HEV?
Anti-HEV IgM is typically detectable from the onset of jaundice or symptoms, around 2–6 weeks after exposure.
What if the rapid HEV is negative but I have jaundice?
Consider hepatitis A, B (HBsAg, anti-HBc IgM), drug-induced hepatitis, leptospirosis (during monsoon), and autoimmune hepatitis. Liver enzymes guide further workup.
Can hepatitis E be transmitted person to person?
Direct person-to-person spread is uncommon. HEV is mainly waterborne. Family members are usually at risk from the same water source, not from the patient.
Is there an HEV vaccine?
A vaccine (HEV 239) is licensed in China but not widely available in India. Prevention currently depends on safe drinking water.
How long does anti-HEV IgM stay positive?
Typically 3–6 months. After that, IgG replaces it and gives long-lasting immunity.
Is treatment with antivirals required?
Most healthy adults need only supportive care — rest, hydration, monitoring. In severe cases and in immunocompromised patients with chronic HEV, ribavirin is sometimes used off-label.
Related Hepatitis tests
Tests commonly ordered alongside HEPATITIS E VIRUS ANTIBODY IGM(HEVM) RAPID TEST, or that help interpret an unexpected result.
Sources & references
- CDC — Hepatitis E · accessed 2026-05-30T00:00:00.000Z
- WHO — Hepatitis E Fact Sheet · accessed 2026-05-30T00:00:00.000Z
- INASL — Acute Viral Hepatitis Consensus · accessed 2026-05-30T00:00:00.000Z
- ICMR — Hepatitis E Surveillance in India · accessed 2026-05-30T00:00:00.000Z
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