Chemical examination of urine

Question 1

Store Reagent strip BELOW ____; DO NOT Freeze

Answer 1

30C

Question 2

Once the container is opened, use strips within

Answer 2

6 months

Question 3

Principle of Automated Reagent Strip Readers

Answer 3

Reflectance Photometry

Question 4

Influenced by NUMBER and SIZE of particles in a solution

Answer 4

Specific Gravity

Question 5

Random urine SG

Answer 5

1.003 to 1.035

Question 6

First Morning SG

Answer 6

> = 1.020

Question 7

24-hr urine SG

Answer 7

1.016 - 1.022

Question 8

If SG is <1.003

Answer 8

not a urine ( except in DI)

Question 9

If SG os >1.040

Answer 9

Radiographic dye present (if refractometer is used)

Question 10

Calibration temperature for urinometer

Answer 10

20 degree C

Question 11

Urine volume required for Urinometer

Answer 11

10 -15 mL

Question 12

Calibration solution used for Urinometer

Answer 12

Potassium sulfate (K2SO4)

Question 13

Refractometer is an indirect method based on

Answer 13

Reftractive index = light velocity in air/ loght velocity in solution

Question 14

Compensated temperature for Refractometer

Answer 14

15 - 38 degree C

Question 15

Refractometer reading is lower than of the urinometer by

Answer 15

0.002

Question 16

Not affected by GLUCOSE, PROTEIN, RADIOGRAPHIC DYE

Answer 16

Specific Gravity

Question 17

Cause of False negative in SG

Answer 17

High alkaline urine

Question 18

Correlation with other tests such as Nitrite, Leukocyte, Microscopic

Answer 18

pH

Question 19

Proteins in normal urine consist of

Answer 19

1/3 ALBUMIN and 2/3 GLOBULIN

Question 20

Moderate proteinuria

Answer 20

1-3 or 4g/day

Question 21

how many oercent of plasma albumin enters the ultrafiltrate

Answer 21

<0.1%

Question 22

Normal Albumin Excretion Rate (AER)

Answer 22

0-20 ug/min

Question 23

Detectable value for Clinical albuminuria

Answer 23

> 200 ug/min

Question 24

Reagents used in Micral test

Answer 24

Gold-labeled antibody
B-galactosidase
Chlorophenol red galactosidase

Question 25

Positve and Negative results for Micral test

Answer 25

(+) RED (-) WHITE

Question 26

Sensitive Albumin test related to creatinine conc. to CORRECT FOR PX HYDRATION

Answer 26

A:C Ratio

Question 27

cold precipitation test that reacts EQUALLY with ALL FORMS of protein

Answer 27

Sulfosalicylic Acid Precipitation test

Question 28

Highly buffered alkaline w/ NO albumin present

Answer 28

False-positive reagent strip

Question 29

Highly buffered alkaline WITH albumin present

Answer 29

False-negative SSA test

Question 30

It is considered in evaluation urine in protein because a trac of protein in a dilute spx is more significant than in concentrated specime

Answer 30

Specific Gravity

Question 31

Most frequently tested in urine

Answer 31

Glucose

Question 32

Sensitivity of Glucose reagent strip

Answer 32

100 mg/dL

Question 33

cause of False (-) interference in Glucose reagent strip

Answer 33

Ascorbic acid, High SG, LOW TEMP, improperly preserve spx.

Question 34

Non-specific test for reducing sugars

Answer 34

Copper reduction/ Clinitest/ Benedicts test

Question 35

Main reacting agent in Clinitest tablet

Answer 35

CuSO4

Question 36

Function of NaCO3 in clinitest tablet

Answer 36

eliminates interfering room air

Question 37

Clinitest sensitivity

Answer 37

200 mg/dL

Question 38

Results from Increase in incomplete fat metabolism due to inability to metabolized carbohydrates

Answer 38

Ketones

Question 39

Parent ketone, 1st ketone body formed

Answer 39

Acetoacetic acid/ Diacetic acid

Question 40

No RBC seen in Microscopic examination in Blood

Answer 40

Hemoglobinuria

Question 41

Seen in Rhabdomyolysis; caused by Cholesterol lowering statin medication

Answer 41

Myoglobinuria

Question 42

Intact RBC is seen in Microscopic Examination for Blood; sensitive early indication of renal disease

Answer 42

Hematuria

Question 43

What is the color of plasma during a hemoglobin examination

Answer 43

Red or Pink

Question 44

Tea colored/ Amber/ Beer-Brown Urine w/ Yellow Foam

Answer 44

Bilirubin

Question 45

Positive color of Ictotest (Tablet)

Answer 45

Blue

Question 46

sensitivity of Ictotest

Answer 46

0.05 to 0.1 mg/dL bili

Question 47

Bile pigment that resulted from hemoglobin degredation

Answer 47

Urobilinogen

Question 48

Rapid screening test for porphobilinogen

Answer 48

Hoesch test