Urine Composition and Volume

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What is the approximate percentage of water in urine?

98%

90%

99%

95% (correct)

What is the primary factor that determines urine volume?

The amount of urea in the body

The amount of water that the kidneys excrete (correct)

The amount of salt in the diet

The amount of glucose in the blood

What is the normal range of daily urine output?

800-2500 mL

600-2000 mL (correct)

400-1000 mL

1000-3000 mL

Why is it important to wear gloves when handling urine specimens?

To reduce the risk of infection Signup and view all the answers

What information should be included on the label of a urine specimen?

Patient's name, identification number, date and time of collection, and additional information as required Signup and view all the answers

What should accompany specimens delivered to the laboratory?

A requisition form Signup and view all the answers

What is the recommended capacity of the container for specimen collection?

50mL Signup and view all the answers

What is the primary concern for delivering specimens to the laboratory?

Delivering the specimen within 2 hours Signup and view all the answers

What is the most commonly used method of preservation for specimens?

Refrigeration Signup and view all the answers

What should be done with a specimen that cannot be delivered and tested within 2 hours?

Refrigerate the specimen Signup and view all the answers

Why are disposable containers recommended for specimen collection?

They reduce the risk of contamination Signup and view all the answers

What is the primary reason for rejecting a specimen?

The specimen is contaminated with feces or toilet paper Signup and view all the answers

What is the term used to describe the transparency or turbidity of a urine specimen?

Clarity Signup and view all the answers

What is the characteristic of the odor of freshly voided urine?

Faint and aromatic Signup and view all the answers

What is the purpose of using a clear container to view a urine specimen?

To evaluate the clarity of the urine Signup and view all the answers

What is the reason for storing reagent strips with a desiccant?

To prevent moisture from affecting the strips Signup and view all the answers

What is the typical temperature range for storing reagent strips?

Below 30 degrees Celsius Signup and view all the answers

What is the result of a color-producing chemical reaction on a reagent strip?

A change in the color of the urine Signup and view all the answers

What is the pigment responsible for the yellow color of urine?

Urochrome Signup and view all the answers

Why is it important to examine the urine specimen under a good light source?

To accurately determine the color of the urine Signup and view all the answers

What is the normal color range of urine?

Pale yellow to amber Signup and view all the answers

What is the possible cause of yellow-orange colored urine?

Administration of phenazopyridine or azo-gantrisin compounds Signup and view all the answers

What is the possible cause of brown or black urine?

Presence of melanin or homogentisic acid Signup and view all the answers

What is the possible cause of blue or green colored urine?

Bacterial infections, including Pseudomonas species Signup and view all the answers

What is the method of interpreting the reactions in urine analysis?

By comparing the color produced on the pad with a chart supplied by the manufacturer Signup and view all the answers

What is the purpose of checking pH levels in urine analysis?

To aid in determining the existence of systemic acid-base disorders Signup and view all the answers

What is a common indicator of renal disease in urine analysis?

Abnormal protein levels Signup and view all the answers

What is a precaution to be taken when using reagent strips?

Remove the strips immediately prior to use Signup and view all the answers

How often should reagent strips be checked with positive and negative controls?

At least once every 24 hours Signup and view all the answers

What should you do if the chemical pads become discolored?

Do not use the pads Signup and view all the answers