Immunocytological test to detect adult carriers of (--SEA/) deletional alpha-thalassaemia.
cross_sectional · Level IV
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Abstract
The gene frequency for (--SEA/) deletional alpha-thalassaemia is high in Southeast Asian populations. We report a simple immunocytological test that is highly sensitive and specific for the detection of adult carriers of the (--SEA/) deletion. We prospectively studied 206 consecutive adult blood samples. All 41 with the (--SEA/) deletion had a positive test; all but 1 of the 165 non-carriers were negative. This test, whose major requirement is a fluorescence microscope, should be useful to identify couples at risk of conceiving fetuses with homozygous alpha-thalassaemia.
Medical subject headings
- Genetic Carrier Screening
- alpha-Thalassemia