Urine Specimen Analysis and Rejection Criteria

What information is essential to include on urine specimen labels immediately after collection?

Which of the following is the primarily purpose of including the date and time of urine collection on requisition forms?

In a urinalysis laboratory, what is the importance of conical bottom tubes?

Why is it important to state specific information on specimen collection and handling at the beginning of each procedure listed in the manual?

What type of urine collection container is most appropriate for automated reagent strip testing?

What is the primary advantage of using a collection container that holds 12 mL of specimen for microscopic analysis?

For which type of urine analysis is it most crucial to use individually packaged sterile containers with secure closures?

What is the recommended action to preserve a urine specimen that cannot be tested within 2 hours of collection?

What is the primary function of the BD Vacutainer Urine Transfer Straw?

What is the most significant consequence of allowing a urine specimen to remain unpreserved at room temperature for more than 2 hours?

Which urine preservative is LEAST suitable when performing chemical tests for glucose, blood, and leukocyte esterase?

A urine specimen requires preservation for drug analysis. Which preservative is MOST appropriate?

Which of the following is a disadvantage of using hydrochloric acid as a preservative for urine samples?

Which type of urine specimen is MOST susceptible to showing erroneous results due to dietary intake or physical activity right before collection?

For general urine screening, which specimen type is considered the ideal choice?

Which of the following is a key advantage of using formalin as a urine preservative?

What is a primary advantage of using hydrochloric acid or acetic acid as a urine preservative?

A physician orders a urine culture transport. Based on the materials, which would be best?

What change occurs in the urine's odor when it is left unpreserved for a long time?

Which of the following best describes the effect of long-standing, unpreserved urine on the concentration of glucose?

Why does the pH of an unpreserved urine sample typically increase over time?

How does exposure to light affect the bilirubin levels in an unpreserved urine sample?

What is the primary reason for refrigerating urine specimens?

What effect does refrigeration have on amorphous urate and phosphate crystals in urine?

A urine specimen is preserved using commercial preservative tablets. What is a major consideration when using this method?

What happens to red blood cell (RBC) and white blood cell (WBC) casts in an unpreserved urine sample that has been standing for an extended period?

What is the primary reason for refrigerating urine specimens during the collection period?

In a pre- and post-massage test (PPMT), a positive result for significant bacteriuria is indicated when the post-massage specimen exhibits how many times the bacterial count of the pre-massage specimen?

What error in urine collection is specifically associated with a timed collection?

In the Stamey-Meares test for prostatitis, which specimen represents the urethral specimen?

If a urine specimen requires a chemical preservative, what characteristic should the preservative possess?

Which of the following describes the correct method for collecting a catheterized urine specimen?

In the Stamey-Meares test, what is the correct order for collection?

What volume of urine is collected for VB1 and VB2 in the Stamey-Meares test?

What is the primary reason for maintaining a strict chain of custody for urine specimens?

Which type of identification is acceptable for the individual providing a urine specimen?

When is a 'witnessed' urine specimen collection typically indicated?

If a witnessed urine specimen collection is required, who should observe the collection?

What volume of urine is typically collected during a witnessed urine specimen collection?

After a witnessed or unwitnessed urine specimen collection, what is the immediate next step?

What is the main purpose of the 'chain of custody' documentation in drug testing?

What does the absence of a complete chain of custody documentation for a urine specimen imply?