The required specimen for quantitative analysis of urinary constituents is the:
A) Midstream clean-catch specimen
B) First morning specimen
C) Random specimen
D) Timed specimen

Question

Quizplus · Accepted Answer

A timed specimen is the best choice for quantitative analysis of urinary constituents as it allows for the collection of urine over a specified time period, allowing for more accurate measurement of certain analytes that fluctuate throughout the day (such as protein or electrolytes). A midstream clean-catch specimen is primarily used for urine culture and sensitivity testing, a first morning specimen can be used for general urinalysis but is not as accurate for quantitative analysis, and a random specimen is often used for screening but may not provide accurate quantitative measurement due to variation in urine concentration throughout the day.

The Required Specimen for Quantitative Analysis of Urinary Constituents Is