BOC Urinalysis Questions and Answers 100% Pass

BOC Urinalysis Questions and Answers 100% Pass 1. Upon receiving a 24-hour urine sample for quantitative total protein analysis, what is the initial step for the technician? - a. Prepare the sample for bacterial culture - b. Add a suitable preservative - c. Test for albumin using a dipstick - d. Determine the total volume d. Determine the total volume 2. Under what circumstances might urobilinogen testing in a urine sample yield inaccurate results? - a. Exposed to light - b. Adjusted to a neutral pH - c. Cooled to room temperature - d. Collected in a nonsterile container 2 3. In the case where a clean-catch urine sample is first analyzed for routine urinalysis and sent for culture 3 hours later, what action should be taken with the specimen? - a. Centrifuge and culture the supernatant - b. Reject it due to delayed processing - c. Omit culture if no bacteria are visible - d. Process for culture only if nitrites are present 4. Which component of urine is most susceptible to alteration with prolonged exposure to light? - a. pH - b. Protein - c. Ketones - d. Bilirubin d. Bilirubin 5. Why is it essential to examine urine samples promptly within 1 hour after collection? 3 - a. Red blood cells, leukocytes, and casts agglutinate over time at room temperature - b. Urobilinogen levels increase while bilirubin decreases under light exposure - c. Prolonged standing may lead to bacterial contamination and urine alkalinization - d. Bacterial and cellular metabolism increases ketone levels 6. If a urine sample arrives at the lab 7 hours after collection, under what condition is it acceptable for culture? - a. Room temperature storage