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Validity of MELISA for metal sensitivity testing.
Elizabeth Valentine-Thon1, Hans-Walter Schiwara
1MELISA (LTT) Center, Laboratory Dr. M. Sandkamp, B. Köster, Dr. R. Hiller, Norderoog 2, 28259 Bremen, GERMANY. EVT@lanisa.de
Neuro Endocrinology Letters
|May 14, 2003
Summary
The MELISA Test accurately detects metal sensitivity in patients. This reproducible, sensitive, and specific test is reliable for diagnosing type IV hypersensitivity reactions to metals.
Area of Science:
- Immunology
- Allergology
- Toxicology
Background:
- Type IV hypersensitivity to metals is a common clinical concern.
- Accurate diagnostic tools are crucial for identifying metal sensitivity.
Purpose of the Study:
- To evaluate the MELISA Test's reproducibility, sensitivity, specificity, and reliability.
- To assess the test's utility in detecting metal sensitivity in patients with suspected type IV hypersensitivity.
Main Methods:
- 250 patients' blood samples were tested using MELISA against various metals.
- Analysis included frequency of metal reactivities, nickel sensitivity, and influence of lymphocyte and mercury concentrations.
- Reproducibility was assessed through duplicate testing and examination of intra- and interassay variations.
Main Results:
- Reactivity was observed to multiple metals, with nickel (73%) and titanium (42%) being most frequent.
- MELISA demonstrated high sensitivity and specificity for nickel allergy.
- Test reproducibility was high (94-99%), with qualitative results being highly reproducible despite minor variations in Stimulation Index values.
Conclusions:
- The MELISA Test is a reproducible, sensitive, specific, and reliable method for detecting metal sensitivity.
- The findings support the use of MELISA for diagnosing metal-induced type IV hypersensitivity.