Specific IgE - Sulfamethoxazole
- Sample Type
- Standard
- Fasting
- No
- Unit
- kUA/L
This test measures the concentration of allergen-specific IgE antibodies to Sulfamethoxazole (a sulfonamide antibiotic). It is used to identify Type I hypersensitivity (immediate) allergic reactions. Detection is crucial for patients who have experienced hives, angioedema, or anaphylaxis after taking 'Sulfa' drugs, ensuring they avoid life-threatening reactions in future medical treatments.
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Check Your Result
Enter your lab result to see where you stand compared to the standard reference range.
Why Context Matters
Serum IgE tests for drugs have variable sensitivity. A negative result does not definitively rule out a drug allergy, as the reaction might be mediated by non-IgE mechanisms (Type IV hypersensitivity/T-cells) or the patient may react to a metabolite rather than the parent drug.
Lab ranges are statistical averages, not biological laws. "Normal" for a 20-year-old male isn't normal for a 60-year-old female.
Related Indicators
Medically Reviewed by Dr. Binoy Babu, MBBS
Board Certified Doctor • 10+ Years Clinical Experience
Dr. Babu is a practicing physician dedicated to empowering patients with clear, actionable medical information. He founded 2opi to bridge the gap between complex lab reports and patient understanding, ensuring everyone has access to a reliable second opinion.
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