Mucosa-associated lymphoid tissue lymphoma in patients with human immunodeficiency virus infection.
haemolytic anaemia and seven HS respectively, compared to the first-day-values). However, delayed EMA labelling did not affect the final results as neither HS false positives nor false negatives were observed on day 7, showing that, in contrast with other tests, analysis using the FC method for HS screening can be delayed for up to 7 d. In conclusion, this study showed that FC is an efficient tool for HS screening whatever the nature of the protein involved, including ankyrin-deficient HS. This method needs small quantities of blood (10 ll) and can be delayed for several days. More specialized methods, such as EC or SDSPAGE are only required in a few cases, especially in atypical cases or when the fluorescence reduction falls in the doubtful area.