Urinalysis and Body Fluids- Success questions with correct answers

Why is the first-voided morning urine specimen the most desirable specimen for routine urinalysis? A. Most dilute specimen of the day and therefore any chemical compounds present will not exceed the detectability limits of the reagent strips B. Least likely to be contaminated with microorganisms because the bladder is a sterile environment C. Most likely to contain protein because the patient has been in the orthostatic position during the night D. Most concentrated specimen of the day and therefore it is more likely that abnormalities will be detected - Answer D. Most concentrated specimen of the day and therefore it is more likely that abnormalities will be detected The first-voided morning urine specimen is the most desirable for chemical and microscopic analysis because it is the most concentrated specimen of the day. Protein and nitrite testing is better performed on a concentrated specimen, as are the specific gravity determination and the examination of urinary sediment. However, because of the lack of food and fluid intake during the night, glucose metabolism may be better assessed on the basis of a postprandial specimen.