SHELDON P. BLAU, M.D.
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To the editor: In the case study, "Pseudogout with Low Values of Alkaline Phosphatase in the Synovial Fluid," by Yaron and associates in the ANNALS (73:751-756, 1970), the authors state that a white blood count was done on the synovial fluid using hydrochloric acid as a diluent. When using hydrochloric acid as a diluent, the hyaluronate present precipitates out, rendering the white count unobtainable.
BLAU SP. Leukocyte Counts in Synovial Fluid. Ann Intern Med. 1971;74:638–639. doi: https://doi.org/10.7326/0003-4819-74-4-638_2
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Published: Ann Intern Med. 1971;74(4):638-639.
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