Process and device for separating blood serum and plasma.

摘要

A sample of whole blood is passed through a filter layer composed of cellulose or glass fibers 9if diameter 0.8 - 2.5 m, length 100 - 3000 m and density 100-300 mg/cm!) which are impregnated with a coating agent, preferably a surfactant, e.g. polyethylene glycol mixed with polyacrylic acid alkyl esters and optionally with a lectin obtained from a plant; the sample is thus separated into plasma and serum which can be separately analysed. Separating devices are described which have at one end a needle (1) communicating with a blood collecting vessel portion (3), a separating filter layer (6a) and means for sucking blood through the filter and separately collecting the plasma and serum. The invention allows numerous samples to be taken and separated rapidly and inexpensively without centrifuging.