Reticulocyte Index
Info
Retic Count
unit % Fraction
Hct
unit % Fraction
Gender Male Female
Age 1 to 3 days 2 wk 1 mo 2 mo 6 mo to 2 yr 2 to 6 yr 6 to 12 yr 12 to 18 yr Adult
R e s u l t s
Reticulocyte Index in %
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Info
Reticulocyte Index

Reticulocyte Index in %=

[Retic Count x (Hct/Normal Hct)]/2

Corrects retic count for severity of anemia.

In setting of anemia, RI=2-3% demonstrates adequate response; less suggests hypoproliferative component.

Archimedes determines normal Hct from sex & age.