Interpret
Reading File
Finding Sources
Finding Sources
Reading File
Here is a full interpretation of Mr. Varun's lab reports:
Patient Summary
Mr. Varun | 28 years | Male | Collected: 14 April 2026
1. Peripheral Blood Smear Examination
| Finding | Result | Interpretation |
|---|---|---|
| RBC morphology | Normocytic Normochromic | Normal red cell size and haemoglobin content — no anaemia suggested |
| WBC count | Normal | Total white cell count is within normal range |
| WBC differential | Eosinophilia | Increased proportion of eosinophils — the key abnormal finding |
| Platelets | Adequate | Normal platelet count |
| Overall Impression | Eosinophilia |
What does eosinophilia mean?
Eosinophils are a type of white blood cell involved in allergic and parasitic responses. Their elevation on a peripheral smear is called eosinophilia. Per Tietz Textbook of Laboratory Medicine (7th Ed.):
An absolute peripheral eosinophil count of 0.5–1.5 × 10⁹/L is mild eosinophilia, and ≥1.5 × 10⁹/L is significant eosinophilia. Secondary (reactive) eosinophilia due to allergies, asthma, parasitic infection, drug reaction, or T-cell disorders is far more common than clonal (malignant) eosinophilia.
Common causes of reactive eosinophilia (most to least likely in a young adult):
- Parasitic infection (helminths — roundworms, hookworms, toxocara, filaria) — most common cause in South Asia
- Allergic conditions — asthma, allergic rhinitis, atopic dermatitis
- Drug reactions
- Food allergy
- Less commonly: autoimmune conditions, Addison's disease, malignancy (lymphoma, leukaemia)
2. Stool Routine & Microscopic Examination
| Parameter | Result | Normal | Significance |
|---|---|---|---|
| Colour | Yellowish Brown | Normal | Normal |
| Consistency | Semi-solid | Normal | Normal |
| Mucus | Absent | Absent | Normal |
| Blood | Absent | Absent | Normal — no GI bleeding |
| Odour | Fecal | Normal | Normal |
| Cysts | Not Detected | Normal | No protozoan cysts |
| Trophozoites | Not Detected | Normal | No active protozoa (e.g., Entamoeba, Giardia) |
| Charcot-Leyden Crystals | Not Detected | Normal | These crystals are a marker of eosinophil breakdown; their absence does not exclude eosinophilia |
| Ova | Not Detected | Normal | No helminth (worm) eggs detected |
| Adult Parasite | Not Detected | Normal | No adult worms visible |
| RBC in stool | Not Detected | Normal | No intestinal bleeding |
Key point about the stool exam:
The stool examination is essentially normal — no parasites, cysts, ova, or blood were found. However, a negative stool exam does not rule out parasitic infection as the cause of eosinophilia, because:
- Tissue-migrating larvae (e.g., Toxocara, early ascariasis, strongyloides) may not shed detectable ova in stool at all stages
- Some parasites (e.g., filaria) are not detected by stool examination
- A single stool examination has limited sensitivity; serial samples increase yield
Clinical Bottom Line
| Key finding | Peripheral blood eosinophilia |
| Stool exam | No intestinal parasites detected |
| Most likely cause | Allergic condition or tissue-invasive/non-intestinal parasitic infection |
| What is NOT ruled out | Visceral larva migrans, strongyloidiasis, filariasis, drug/allergic cause |
Recommended next steps (for the treating physician to consider):
- Absolute eosinophil count (AEC) on CBC to quantify severity
- Serum IgE — elevated in allergy and parasitic infection
- Specific serology — Toxocara, Strongyloides, filaria antibodies
- Stool examination ×3 serial samples for better sensitivity
- Clinical history — travel, pet exposure, dietary habits, drug history, allergy symptoms
This report alone is not diagnostic. Correlation with clinical symptoms is essential. Please consult a physician for evaluation and management.
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