- The packed cell volume produced by vertical centrifugation of blood in capillary tubes, allowing controlled compaction and dispersion of red blood cells; read with a hematocrit to produce the zeta sedimentation ratio.
* * *ze·ta·crit (zaґtə-krit) the packed-cell volume produced by the zeta sedimentation ratio procedure (see under ratio).
Medical dictionary. 2011.
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zeta sedimentation ratio — (ZSR) a measurement comparable to the erythrocyte sedimentation rate, except that it is unaffected by anemia. The packed cell volume (zetacrit) of a blood specimen is calculated by centrifuging the specimen in a Zetafuge, a specially designed… … Medical dictionary
ratio — An expression of the relation of one quantity to another ( e.g., of a proportion or rate). SEE ALSO: index (2), quotient. [L. r. (ration ) a reckoning, reason, fr. reor, pp. ratus, to reckon, compute] absolute terminal innervation r. the number… … Medical dictionary