Urinalysis – MLS Questions and Answers with Verified Solutions

Urinalysis – MLS Questions and Answers with Verified Solutions 6) If a urine sample collected at 8:00 AM is left uncapped at 5°C until 2:00 PM, which test result is likely to change due to these storage conditions? - A. glucose levels - B. ketone levels - C. protein concentration - D. nitrite presence - B. ketone levels 11) In the MDRD formula used to estimate eGFR, what additional factor is considered along with age, BUN, race, and albumin? - A. urea levels - B. ammonia levels - C. creatinine levels - D. cystatin C levels - C. creatinine levels 2 16) What condition is often associated with an ammonia-like smell in patients' urine? - A. diabetes mellitus - B. hepatitis - C. Proteus sp. infection - D. yeast infection - C. Proteus sp. infection 18) Acidic urine containing hemoglobin darkens over time due to the formation of which substance? - A. myoglobin - B. sulfhemoglobin - C. methemoglobin - D. red blood cells - C. methemoglobin 25) What is the likely cause of turbidity in a urine sample collected shortly after lunch from a healthy 25-year-old man, which showed normal results on a strip test? - A. fat content - B. presence of white blood cells 3 - C. urate crystals - D. phosphate crystals - D. phosphate crystals 26) In which metabolic disorder does urine typically darken to a dark brown to black color upon standing? - A. phenylketonuria - B. alkaptonuria - C. maple syrup disease - D. aminoaciduria - B. alkaptonuria 9) Following a 24-hour urine collection from a man without kidney issues, what is the next step if there are doubts about the completeness of the collection? - A. Proceed with hormone determination,