A reverse dot-blot method for rapid detection of non-deletion alpha thalassaemia.

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A reverse dot blot method based on membrane-bound allele-specific oligonucleotides as hybridization targets for amplified alpha-gene fragments has been developed for the rapid detection of four non-deletion alpha thalassaemia defects found in the Chinese. Since these non-deletion defects account for 22 8% of haemoglobin H disease, a sensitive, specific and rapid screening method should be of value.