Hematology Calculations Hematology Review 338
FORMULA EXAMPLE CALCULATION
Retic % =
Reticulocyte % using Miller Disc =
Absolute retic count (ARC) (¥ 109 /L) =
Corrected retic count (CRC) =
retic %
retics per 1,000 RBCs
10
retics in square A 100
RBCs in square B 9
¥
¥
retic %¥ ¥RBC (10 / L)^121 , 000
100
¥
HCT(%)
45
What is the retic count if reticulum is observed in 15 of 1,000 RBCs?
Retic % = = 1.5
What is the retic count if 60 retics are counted in square A & 300 RBCs are counted in
square B?
Retic % = = 2.2
What is the absolute retic count if the retic count is 2% & the RBC is
5.2 ¥ 1012 /L?
ARC = = 104 ¥ 109 /L
What is the corrected retic count if the uncorrected retic count is 5% & the HCT is 36%?
CRC = 5 ¥ = 4%
15
10
60
300
¥
¥
100
9
2 ¥ ¥5.2 1 , 000
100
36
45
continued...
