Ashby method

Ash·by meth·od

(ash'bē),
a differential agglutination method for estimating erythrocyte lifespan; compatible blood possessing a group factor that the recipient lacks is transferred to the recipient; after the transfusion, sera with potent agglutinins for the recipient's red blood cells are added to samples of the recipient's blood, and the unagglutinated red blood cells are counted; with this technique, the red cell lifespan in normal persons is found to be 110-120 days.

Ashby method

An all-but-abandoned non-radioactive technique for determining red cell survival in the general circulation by differential agglutination; current preferred methods use radioactive chromium as a label.

Ashby,

Winifred, 20th century hematologist.
Ashby method - a differential agglutination method for estimating erythrocyte life span.
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Using Ashby methods, says Granta, the user begins with design requirements and expresses these criteria with the aid of performance indices, and then uses a series of graphical charts to optimize material choice and analyze selection trade-offs.