Venous and Skin puncture blood counts compared

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Abstract
Venous and skin puncture blood counts were compared in 80 paired samples from 33 children, aged 6 months to 14 years, and 10 adults. Significantly higher mean values for Hb, RBC, haematocrit and neutrophils were found in skin puncture blood in children whereas platelet values were slightly higher in venous blood. Similar results were found in adult samples. Only occasionally were differences likely to be of clinical importance. The excellent comparability of paired platelet counts, at variance to that found in some previous studies, indicates that skin puncture blood can be used for platelet estimation providing an appropriate counting method is used.

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