MLSP: Urine and Stool (LEC) Flashcards
_____ and ______ are two out of the three most common specimens [third is the blood]; most common to encounter during internship or work
URINE AND STOOL
is the test used for urine
URINALYSIS
Ultrafiltrate of Plasma [plasma is the liquid
portion of the blood] Formed at kidneys
Urine Formation
1200-1500mL (600-2000mL also considered normal) [depends on the kinds of fluids we take
NORMAL DAILY OUTPUT
decreased urine output: 400mL/day (adults); occurs at excessive water loss
OLIGURIA
cessation of urine flow; suggests severe kidney damage [urine cannot pass/flow out of the body]
ANURIA
increased excretion of urine during the night
NOCTURIA
increased urine output: >2.5L/day (adults) [marker for diabetes insipidus and diabetes mellitus]
POLYURIA
T or F
Urine is normally 95% water and 5% solutes (organic and inorganic)
True
T or F
Remember that urine is classified as a BIOHAZARD
True
any urine specimen that the patient has
collected at any time of the day;
RANDOM URINE
T or F
FIRST MORNING is most preferred sample, because it is more concentrated
True
T of F
For quantitative measurements
24 HOUR SPECIMEN, are given large container with preservative
True
commonly done on pediatrics or for patients that have difficulty urinating;
SUPRAPUBIC ASPIRATION
collected under sterile conditions by passing a sterile hollow tube through the urethra into the bladder
CATHETERIZED
alternative to catheterized specimens; less traumatic
MIDSTREAM CLEAN-CATCH
T or F
Sample collection is the most vulnerable part of Drug Testing
True
Types of Tampering:
-adding other chemical to the
urine specimen that will affect test results later
on; most common chemical used is bleach
ADULTERATION
Types of Tampering:
-use another urine sample
SUBSTITUTION
Types of Tampering:
- patient is adding water to the
specimen to reduce the concentration and make the drug contents of his output low enough to be detected
DILUTION
documentation of sample handling
CHAIN OF CUSTODY
T or F
Specimen should be delivered and tested within 2 hours
True
Helpful in evaluation of gastrointestinal disorders
FECES(STOOL)