Chap 3 Flashcards
Primary organic component. Product of metabolism of protein and amino acids
Urea
Product of metabolism of creatine by muscles
Creatinine
Product of breakdown of nucleic acid in food and cells
Uric acid
Primary inorganic component. Found in combination with sodium (table salt) and many other inorganic substances
Chloride
Primarily from salt, varies by intake
Sodium
Combined with chloride and other salts
Potassium
Combines with sodium to buffer the blood
Phosphate
Regulates blood and tissue fluid acidity
Ammonium
Combines with chloride, sulfate, and phosphate
Calcium
Prevents bacterial growth for 24 hours?
Refrigeration
Prevents bacterial growth
and metabolism
Acids
Excellent sediment preservative
Formalin
Good preservative for drug analyses
Sodium fluoride
Convenient when refrigeration not possible
Have controlled concentration to minimize interference
Commercial preservative tablets
Contains collection cup, transfer straw, culture and sensitivity (C&S) preservative tube, or UA tube
Urine collection kits
Specimen stable at room temperature (RT) for 48 hours; prevents bacterial growth and metabolism
Light gray and gray
C&S tube
Use on automated instruments
Yellow UA Plus tube
Specimen stable for 72 hours at RT;
instrument-compatible
Cherry red/yellow
Preservative Plus tube
Random
Routine screening
First morning
Routine screening
Pregnancy tests
Orthostatic protein
24-hour (or timed)
Quantitative chemical tests
Catheterized
Bacterial culture
Midstream clean-
catch
Routine screening
Bacterial culture
Suprapubic aspiration
Bladder urine for bacterial culture
Cytology
