Urinalysis - Urine Specimens Flashcards
When is a random urine specimen used?
routine urinalysis
When is a random urine specimen collected?
anytime
Why is a random urine specimen not ideal?
urine may be dilute & contaminated
When is a first morning urine specimen used?
routine urinalysis
When is a first morning specimen collected?
upon awakening
What type of urine specimen is best for screening?
first morning
What type of urine specimen is most concentrated?
first morning
When is a 2-hr postprandial urine specimen used?
diabetes mellitus monitoring
When is a 2-hr postprandial urine specimen collected?
2 hours after eating
What type of urine sample is best for detecting glycosuria?
2-hr postprandial
When is a 24-hr urine specimen used?
for quantitative chemical tests
How is a 24-hr urine specimen collected?
-discard 1st void on Day 1 & note time
-collect all urine for the next 24 hours, including the 1st void on Day 2
What is a common source of error for a 24 hour urine specimen?
improper collection
When is a clean catch urine specimen used?
routine UA and culture
How is a clean catch urine sample collected?
cleanse external genitalia & collect midstream in sterile container
When using a clean catch specimen for both a urinalysis and a culture, which should be done first?
setup culture first before UA
When is a catheterized urine specimen used?
culture
How is a catheterized urine specimen collected?
catheter is inserted into the urethra
When is a suprapubic aspiration used?
culture
How is a suprapubic aspiration used?
needle is inserted through the abdomen into the bladder
