Scrub typhus IgM by EIA - Serum
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Detects IgM antibodies against Orientia tsutsugamushi, the bacterium responsible for scrub typhus
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🧪 What is Scrub Typhus IgM by EIA?
The Scrub Typhus IgM EIA test detects IgM antibodies against Orientia tsutsugamushi, the bacterium responsible for scrub typhus infection. IgM antibodies indicate recent or acute infection.
❓ Why is the Test Done?
To:
- Diagnose acute scrub typhus infection in patients presenting with febrile illness
- Differentiate scrub typhus from other causes of fever such as dengue, malaria, leptospirosis
- Guide timely antibiotic therapy to prevent complications
- Monitor outbreaks in endemic regions
📊 Normal Range / Interpretation
Result | Interpretation |
|---|---|
Negative | No detectable IgM; unlikely acute infection |
Positive | Recent or current scrub typhus infection |
Equivocal | Indeterminate; repeat testing advised |
📈 Clinical Significance
Result | Clinical Implications |
|---|---|
Positive IgM | Confirms recent or active scrub typhus infection |
Negative IgM | Rules out recent infection but does not exclude early infection |
Equivocal | May require retesting or additional confirmatory tests |
🧠 Associated Conditions
Condition | Details |
|---|---|
Scrub Typhus | Febrile illness with symptoms like fever, rash, eschar |
Potential complications | Multi-organ involvement if untreated |
🔄 Related / Follow-Up Tests
- Scrub Typhus IgG antibody – indicates past exposure or immunity
- PCR for Orientia tsutsugamushi – molecular diagnosis
- Complete blood count (CBC) – assess for thrombocytopenia or leukocytosis
- Liver and renal function tests – monitor organ involvement
- Other febrile illness tests – dengue, malaria, leptospira
✅ Fasting Required?
Test | Fasting Required |
|---|---|
Scrub Typhus IgM EIA | ❌ No |
📝 Summary Table
Parameter | Details |
|---|---|
What | Detects IgM antibodies for acute scrub typhus infection |
Why | Diagnose recent infection and guide treatment |
Normal Range | Negative or positive based on cutoff values |
Positive Result | Confirms recent or active infection |
Associated Conditions | Scrub typhus febrile illness |
Follow-up Tests | IgG antibody, PCR, CBC, LFT, renal tests |
Fasting Required | ❌ No |
How our test process works!
