Urine Specimens
Urinalysis and Body
Fluids Review 486
TYPE USE COLLECTION COMMENTS
Random
First am
2-hr postprandial
24-hr
Clean catch
Catheterized
Suprapubic aspiration
Routine urinalysis (UA)
Routine UA
Diabetes mellitus monitoring
Quantitative chemical tests
Routine, culture
Culture
Culture
Anytime
Upon awakening
2 hr after eating
Discard 1st void on day 1 & note
time. Collect all urine for next
24 hr, including first void at
same time on day 2
Cleanse external genitalia & collect
midstream in sterile container
Catheter inserted into urethra
Needle inserted through abdomen
into bladder
Not ideal since urine may be
dilute & contaminated.
Best for screening. Most
concentrated.
Best for detecting glycosuria.
Improper collection is common
source of error. Refrigerate or
keep on ice. Preservatives
required for some tests.
Less contamination. Do culture
before UA.
Avoids contamination.
Avoids contamination.
