Question | Answer |
A patient with uncontrolled diabetes mellitus will most likely have: | pale urine with a high specific gravity. Due to polyuria and increased glucose in urine. |
While performig and analysis of a bay's urine, the technologist notices the specimen to have a "mousy" odor. Of the following substances that may be excreted, the one that most characteristically produces this odor is: | phenylpyruvic acid. Phenylketonuria is a genetic disorder that results in a urine with a mousy odor. Acetone has a fruity odor, Bacteria can produce ammonia odor. Porphyrin has no odor. |
An ammonia-like odor is characteristically associated with urine from patients who: | have an infection with Proteus spp. Proteus spp. is urease positive. Proteus excrete urease, and urease breaksdown ammonia. |
Urine that develops as a port wine color after standing may contain: | porphyrins. Melanin is black, bilirubin is amber/brown. |
Acid urine that contains hemoglobin will darken on standing die to the formation of: | methemoglobin. |
Urine from a 50-year-old man was noted to turn dark red on standing. This change is caused by: | porphyrins. |
The clarity of a urine sample should be determined: | following thorough mixing of the specimen. |
Milky urine from a 24 year old woman would most likely contain: | many WBCs or (sperm) |
A brown-black urine would most likely contain: | melanin. Bile is green/brown. |
The yellow color of urine is primarily die to: | The only normal pigment is urochrome. |
Red urine may be due to: | Myoglobin. |
Urine osmolality is related to: | specific gravity. Both measure the solutes in a urine. |
Urine specific gravity is an index of the ability of the kidney to: | concentrate the urine. Specific gravity relates to H2O ONLY. |
Osmolality is a measure of: | dissolved particles, including ions. |
To prepare a solution appropriate for quality control of the refractometer, a technician should use: | NaCl with a specific gravity of 1.022. |
A urine's specific gravity is directly proportional to its: | dissolved solids. |
Use of a reftactometer over a urinometer is preferred due to the fact that the refractometer uses: | a small volume of urine and compensates for temperature. |
The method of choice for performing a specific gravity measurement of urine following administration of x-ray contrast dyes is: | reagent strip because it is not affected by the dye. |