The quizzes about Physical Examination of Urine (26 questions)

The concentration of a normal urine specimen can be estimated by which of the following?

Color

Clarity

Foam

Odor

The normal yellow color of urine is produced by:

Bilirubin

Hemoglobin

Urobilinogen

Urochrome

A yellow-brown specimen that produces a yellow foam when shaken can be suspected of containing:

Bilirubin

Carrots

Hemoglobin

Rhubarb

A urine that turns black after standing may contain:

Homogentisic acid

Melanin

Methemoglobin

All of the above

Specimens that contain intact RBCs can be visually distinguished from those that contain hemoglobin because:

Hemoglobin produces a much brighter red color

Hemoglobin produces a cloudy, pink specimen

RBCs produce a cloudy specimen

RBCs are quickly converted to hemoglobin

After eating beets purchased at the local farmers’ market, Mrs. Williams notices that her urine is red, but Mr. William’s urine remains yellow. The Williamses should:

Be concerned because red urine always indicates the presence of blood

Not be concerned because all women produce red urine after eating beets

Be concerned because both of them should have red urine if beets are the cause

Not be concerned because only Mrs. Williams is genetically susceptible to producing red urine from beets

Specimens from patients receiving treatment for urinary tract infections frequently appear:

Clear and red

Viscous and orange

Dilute and pale yellow

Cloudy and red

Freshly voided normal urine is usually clear; however, if it is alkaline, a white turbidity may be present due to:

Amorphous phosphates and carbonates

Uroerythrin

WBCs

Yeast

Microscopic examination of a clear urine that produces a pink precipitate after refrigeration will show:

Amorphous urates

Porphyrins

Red blood cells

Triple phosphate crystals

Under what conditions will a port-wine urine color be observed in a urine specimen?

The patient has eaten Clorets.

Melanin is present.

Urine contains porphyrins.

The patient has a Pseudomonas infection.

Which of the following specific gravities would be most likely to correlate with a dark yellow urine?

1.005

1.010

1.020

1.030

Urine specific gravity is equally influenced by the presence of glucose and sodium.

True

False

In what circumstance might a sediment be slightly warmed prior to microscopic examination?

To hemolyze RBCs

To dissolve amorphous urates

To increase the specific gravity

To correct for temperature in determining the specific gravity

A urine specific gravity measured by refractometer is 1.029, and the temperataure of the urine is 14C. The specific gravity should be reported as:

1.023

1.027

1.029

1.032

Refractive index compares:

Light velocity in solutions with light velocity in solids

Light velocity in air with light velocity in solutions

Light scattering by air with light scattering by solutions

Light scattering by particles in solution

Refractometers are calibrated using:

Distilled water and protein

Distilled water and blood

Distilled water and sodium chloride

Distilled water and urea

A correlation exists between a specific gravity of 1.050 and a:

2 glucose

2 protein

First morning specimen

Radiographic dye infusion

An alkaline urine turns black upon standing, develops a cloudy white precipitate, and has a specific gravity of 1.012. The major concern about this specimen would be:

Color

Turbidity

Specific gravity

All of the above

The reading of distilled water by the refractometer is 1.003. You should:

Subtract 1.003 from each specimen reading

Add 1.003 to each specimen reading

Use a new refractometer

Adjust the set screw

A urine specimen with a specific gravity of 1.008 has been diluted 1:5. The actual specific gravity is:

1.008

1.040

1.055

5.040

The method for determining a urine specific gravity that is based on the principle that the frequency of a sound wave entering a solution changes in proportion to the density of the solution is:

Colorimetric

Harmonic oscillation densitometry

Refractometry

Urinometry

A specimen with a specific gravity of 1.005 would be considered:

Isosthenuric

Hyposthenuric

Hypersthenuric

Not urine

Specific gravity is of more diagnostic value than osmolarity in evaluating renal concentration ability.

True

False

A strong odor of ammonia in a urine specimen could indicate:

Ketones

Normal

Phenylketonuria

Urinary tract infection

The microscopic of a cloudy amber urine is reported as rare WBCs and epithelial cells. What does this suggest?