Urinalysis and Body Fluids 6th Edition by Majorie DiLorenzo, Susan Strasinger

Exercise 19

Considering the correct procedures for care, technique, and quality control for reagent strips, state a possible cause for each of the following scenarios.

a. The urinalysis supervisor notices that an unusually large number of reagent strips are becoming discolored before the expiration date has been reached.

b. A physician’s office is consistently reporting positive nitrite test results with negative LE test results.

c. A student’s results for reagent strip blood and LE are consistently lower than those of the laboratory staff.

d. One morning the urinalysis laboratory was reporting results that were frequently questioned by physicians.

Step 1 of 4

a.

Laboratory personnel did not cap the containers containing reagent strips properly in time.

• When reagent strips are removed from the container before the test, it should be immediately resealed tightly

• If not, reagent strips discoloration occurs before the expiry date