Urinalysis and Body Fluids 6th Edition by Majorie DiLorenzo, Susan Strasinger

Exercise 13

Results of a urinalysis collected following practice from a 20-year-old college athlete are as follows:

COLOR: Dark yellow KETONES: Negative

CLARITY: Hazy BLOOD: 1+

SP. GRAVITY: 1.029 BILIRUBIN: Negative

pH: 6.5 UROBILINOGEN: 1 EU

PROTEIN: 2+ NITRITE: Negative

GLUCOSE: Negative LEUKOCYTES: Negative

The physician requests that the athlete collect another specimen in the morning prior to classes and practice.

a. What is the purpose of the second sample?

b. What changes would you expect in the second sample?

c. Is the proteinuria present in the first sample of prerenal,renal, or postrenal origin?

Step 1 of 3

a.

Purpose of second sample:

• To detect the abnormal result caused by exercise

• In glomerular proteinuria, glomerular membrane damage allows serum protein, white blood cells, and red blood cells to pass through in urine

• Elevated pressure of blood in the glomerulus will dominate the selective filtration, which causes albumin (protein) to enter the filtrate. This condition occurs after strenuous exercise