Clinical Microscopy Test 4

The reagent test pad for pH contains which of the following?

Which of the following tablet tests has historically been used to rule out a false-positive bilirubin result achieved by reagent test strip?

A clear, red-brown urine specimen resulted in a positive reaction for blood on the reagent test strip, but no red blood cells were seen during microscopic examination. These results most likely indicate the presence of:

A double-sequential enzyme reaction employing glucose oxidase and peroxidase is used to measure which of the following urinary analytes by reagent test strip?

Development of a pink color on the absorbent mat surrounding an Ictotest® tablet should be reported as:

The absorbent mat surrounding an Ictotest® tablet develops a dark purple color. This reaction indicates the presence of which of the following?

A urine specimen analyzed for glucose by a glucose oxidase reagent test strip may yield a falsely low or negative value in the presence of:

The surface of an Acetest® tablet develops a dark purple color. This reaction indicates a large presence of which of the following in the patient’s urine sample?

A urinalysis performed on a sample from a 2-week-old infant with diarrhea showed a negative reaction with the glucose oxidase reagent test strip. Historically, a copper reduction tablet test would have been performed to check the urine sample for the presence of:

A patient suspected of having recurrent urinary tract infections provides a clean-catch midstream urine sample. A positive value for which of the following reagent test strip results would best support this diagnosis?

The occult blood pad of a reagent test strip yields an orange background with several green spots. This indicates the specimen likely contains:

A reagent test strip pad for occult blood is reported as positive, but microscopic examination did not reveal the presence of red blood cells. This patient’s condition can be termed:

A patient seen at an urgent care facility for lower back pain and a fever has the urinalysis results shown in this table:

Microscopic examination shows the presence of 15-20 RBC/HPF, 30-40 WBC/HPF,3+ bacteria, and 2-3 renal tubular epithelial cells/HPF. The discrepancy between the “negative” result for nitrite on the reagent test strip and the presence of bacteria on microscopy may be best explained by:

Which of the following reagent test strip pads will yield a positive reaction when the sample contains hemoglobin or myoglobin?

The results of a urinalysis on a first morning specimen are shown in this table:

After viewing uric acid crystals in the centrifuged urine sediment, the laboratorian should question which of the results?

A false-negative result may occur for the nitrite reagent test strip pad if the sample:

The nitrite reagent test strip pad is most useful in the identification of a bacterial urinary tract infection when evaluated in combination with which of the following test pads?

Despite their presence in a sample, the leukocyte esterase reagent test strip pad would yield a negative result for which of the following types of white blood cells?

Reagent test strip pads for ketones primarily measure:

Microscopic examination of cellular elements in a urine sediment, such as RBCs, WBCs, bacteria, and epithelial cells, should be enumerated using: