CMLA Urinalysis 5

Question 1

What is the maximum time a urine specimen should be stored at room temperature before analysis?

Accepted Answer

2 hours

Answer

Urine should be analyzed within 2 hours of collection at room temperature to prevent bacterial growth and cellular degeneration.

Question 2

Triple phosphate crystals in urine are also known as:

Accepted Answer

Coffin-lid crystals

Answer

Triple phosphate (struvite) crystals have a characteristic coffin-lid or prism shape and are found in alkaline urine.

Question 3

Which urine test result is considered a CRITICAL finding requiring immediate physician notification?

Accepted Answer

Positive glucose with large ketones in a known diabetic

Answer

Large ketones with positive glucose in a diabetic may indicate diabetic ketoacidosis (DKA), a life-threatening emergency requiring immediate notification.

Question 4

What does a cloudy or turbid urine appearance most commonly indicate?

Accepted Answer

Presence of cells, bacteria, or crystals

Answer

Turbidity in urine is most commonly caused by white blood cells, red blood cells, bacteria, or precipitated crystals.

Question 5

In a midstream clean-catch urine, how many squamous epithelial cells per low-power field indicate probable contamination?

Accepted Answer

More than 5

Answer

More than 5 squamous epithelial cells per low-power field suggests significant vaginal or skin contamination of the specimen.

(CMLA) Certified Medical Laboratory Assistant Practice Test

(CMLA) Certified Medical Laboratory Assistant Practice Test

CMLA Urinalysis 5