MICROSCOPIC EXAMINATION OF URINE

Question 1

Formed elements disintegrate rapidly in

Answer 1

Dilute, alkaline urine

Question 2

May cause precipitation of amorphous crystals and other non pathologic crystals

Answer 2

Refrigeration

Question 3

May dissolve some elements prior to centrifugation

Answer 3

Warming the specimen to 37 degrees celsius

Question 4

Minimizes external contamination of the sediment

Answer 4

Midstream clean catch

Question 5

Dilute, random specimen may cause

Answer 5

False negative readings

Question 6

Specimen volume for microscopic examination

Answer 6

10 and 15 ml (average of 12 ml)

Question 7

Centrifugation rcf and minutes

Answer 7

400 RCF for 5 minutes

Question 8

Frequency of centrifuge calibration

Answer 8

Every three months

Question 9

Frequency of centrifuge disinfection

Answer 9

Weekly

Question 10

This should not be used to slow the centrifuge

Answer 10

Braking mechanism

Question 11

All specimens must be capped to prevent

Answer 11

Biohazardous aerosols

Question 12

Volume of the sediment after decantation

Answer 12

0.5 to 1.0 ml

Question 13

Volume of sediment examined

Answer 13

20 microliter or 0.02 ml in 22 x 22 mm glass coverslip

Question 14

Allowing the specimen to flow outside of the coverslip may result in the loss of heavier elements such as

Answer 14

Casts

Question 15

To control sediment volume

Answer 15

Decanting pipettes

Question 16

To control sediment examined

Answer 16

Decanting slides

Question 17

Provides a specially-designed tube that permits direct reading of the urine sediment

Answer 17

Cen-Slide

Question 18

Consist of a glass flow cell into which urine sediment is pumped

Answer 18

R/S Workstations

Question 19

Ave # per 10 HPF

Answer 19

RBC
WBC
Oval fat bodies

Question 20

Ave # per 10 LPF

Answer 20

Casts

Question 21

0/+1/+2/+3/+4

Neg, rare, few, moderate, many

Answer 21

Epithelial cells
Crystals
Others