General Laboratory Calculationscontinued
CALCULATION EXAMPLE
Dilution =
Vol. of specimen
Vol. of specimen + vol. of diluent
Correcting for a dilution: Value obtained for diluted
specimen × reciprocal of dilution
What is the dilution if 0.1 mL of serum is diluted with 0.4 mL of saline?
0.1 =0.1 = 1
0.1 + 0.4 0.5 5
How would you prepare a 1:10 dilution of urine?
1 part of urine + 9 parts of diluent
A specimen for glucose is diluted 1:5. The value of the diluted specimen is
100 mg/dL. What value should be reported?
100 mg/dL × 5 = 500 mg/dL
Laboratory Operations Review 66
