Other Urine Chemistry Testscontinued
Urinalysis and Body
Fluids Review 497
TEST DETECTS METHOD(S) SOURCES OF ERROR COMMENTS
Acetest
Ictotest
Most sensitive to acetoacetic
acid. Can be used on urine,
serum, plasma.
More sensitive than reagent
strip. Less affected by interfering
substances.
Sodium nitroprusside
reaction
Diazo reaction
Ketones
Bilirubin
False neg: Improperly stored
specimen (Acetone is lost into air
if sample is left at RT. Bacteria
break down acetoacetic acid.)
False pos: Urine pigments
False neg: Exposure to light,
improperly stored specimen,
↑ascorbic acid, ↑nitrite