specimen handling

Question 1

how would a specimen left at RT for 7 hours change? include only chemical changes: pH, glucose, ketones, bilirubin & urobilinogen

Answer 1

pH would increase (more alkaline); all others decrease

Question 2

how would blood, casts, bacteria, and nitrite change in RT urine left too long?

Answer 2

blood, casts, decrease; bacteria and nitrite (due to bacteria!) increase

Question 3

what type of urine specimen is best for pregnancy, and recovery of cells and casts?

Answer 3

first morning

Question 4

what kind of collection is best for bacterial and fungal cultures of urine ?

Answer 4

midstream clean catch

Question 5

what is typical volume of urine needed for routine urinalysis protocols?

Answer 5

15 to 20 ml, but more is encourgaed

Question 6

A fully automated urinalysis system can use as little as how much urine?

Answer 6

4 mL

Question 7

how soon after VOIDING must a urine sample be analyzed?

Answer 7

1 hour!

Question 8

best preservative is:

Answer 8

refrigeration

Question 9

what should be done with a refrigerated sample before testing?

Answer 9

return to RT, about 15 mins