Plasma artificially depleted of PTA by incubation following activation with diatomaceous silica was evaluated as a reagent for the assay of PTA. It gave results which were comparable to those obtained with naturally deficient plasma and had the advantages of being readily available and more stable on storage. Laboratory differentiation was possible between PTA and HF deficiency.

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© 1963 by American Society of Hematology, Inc.
1963
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