Introduction to Urinalysis Flashcards
Urine specimen for ROUTINE SCREENING test and qualitative analysis
Random/ Occasional/ Single
IDEAL spx for ROUTINE SCREENING/URINALYSIS and Pregnancy testing
First Morning
For glucose determination, 2nd voided urine after a period of fasting
Second morning / Fasting
PREFFERED for testing Glucose; for DIABETIC screening
2-hour post prandial
Optional w/ Blood samples in glucose tolerance test
Glucose Tolerance
For ROUTINE SCREENING and BACTERIAL CULTURE
MSCC
For BACTERIAL CULTURE, may be urethral or ureteral
Catheterized
Most Sterile; Bladder urine for anaerobic bacterial culture and urine cytology
Suprapubic Aspiration
Use of clear, plastic bag, with adhesives; sterile specimen obtained by catheterization or suprapubic aspiration
Pediatric Specimen
Urine specimen for Prostatic infection
Three glass technique
No. of WBC and bacteria in the 3rd spx is 10x GREATER than that of the 1st
Prostitis
The four glass method consists of bacterial culture of the initially voided urine
Stamey-Meares Test
Timed specimen for Addis Count
12 hour
Timed spx for Nitrite determination
4 hrs
Afternoon Timed spx is for what determination
Urobilinogen
Urine remains in the bladder for how many hours before voiding for Nitrite determination
4 hours
Within how many minutes is the temperature checked in drug testing collection
4 minutes
It is added to the toilet water reservior to prevent specimen adulteration
Blueing Agent
Temperature for Drug testing Specimen collection
32.5 - 37.7 degree celcius
urine containers should have a ____, and has an opening for atleast _____
wide base
4 cm
24 hr urine containers should hold up to
3 L
Addition of urine BEFORE the start of 24-hr collection period causes
False Increase results
FAILURE to include urine at the END of 24-hr collection period causes
False decreased results
Urine spx should be delivered to the laboratory and tested w/in
2 hrs
IDEAL time for urine spx to be examined
30 minutes
Causes Volatilization and bacterial metabolism (left UNCAPPED)
Ketones
Loss of Motility, death and possible misidentification as WBC
Trichomonas
Disintegrate in dilute alkaline urine
RBCs WBCs and CAST
Preservative of choice for ROUTINE UA and URINE CULTURE; Prevents bacterial growth for 24-hours
Refrigeration
Preserves Glucose and Sediments well; interferes with acid precipitation test for PROTEIN
Thymol
Preserves PROTEIN, keeps pH about 6.0 for CULTURE TRANSPORT C&S; Interferes w/ DRUG and HORMONE analyses
Boric Acid
Excellent sediment preservative; Preservative of Choice for ADDIS COUNT
Formalin
Preserves 5-HIAA
Boric Acid
HCI
Best all around fixative, FLOATS on urine surfaces & clings to pipettes and testing material
Toluene
Prevents GLYCOLYSIS, good preservative for DRUG ANALYSIS
Sodium Fluoride
Used for cytology studies (50 mL of urine)
Saccomanno fixative
Used for cytology studies (50 mL of urine)
Saccomanno fixative
