Quick Review Cards for Medical Laboratory Science

General Sources of Error with Reagent Strip

Testingcontinued

Urinalysis and Body

Fluids Review 493

POSSIBLE EFFECT COMMENTS

Failure to perform quality control

Expired strips

Highly pigmented urine

Run pos & neg control every 24 hr & when opening new container.

Pigment masks true rxns. Test by alternate method.

Erroneous results

Atypical colors, false-pos rxns