Renal Function
Name the part of the nephron where urine formation begins.
glomerulus
The color of a urine containing bilirubin.
yellow-brown
Name a specimen requirement for proper urine testing.
specimen <2 hours old, well-mixed, at room temp
What is the term for the presence of WBCs in the urine?
pyuria
Which body fluid is collected by lumbar puncture?
CSF
Blood leaves the glomerulus through which arteriole?
efferent arteriole
The color of a urine containing melanin or homogentistic acid.
brown or black
What would the specific gravity be if the kidney loses its ability to concentrate and dilute urine?
1.010
What is the motion called for the granules in glitter cells?
Brownian motion
Which synovial crystal appears yellow under polarized light when parallel to the slow wave?
MSU
The term for the maximum amount of analyte that can be completely reabsorbed from the glomerular filtrate.
renal plasma threshold
Name a possible "normal" cause of urine cloudiness.
amorphous crystals, normal crystals, squamous or transitional epithelial cells, mucus, sperm, powders, etc
A positive nitrite result along with a positive leukocyte esterase result and the presence of WBCs in the sediment suggests what condition?
urinary tract infection
What are renal epithelial cells filled with fat droplets called?
oval fat bodies
The amniotic fluid lamellar body assay is used to determine:
fetal lung maturity
The concentrating portion of the Loop of Henle.
descending portion
Which disorder gives urine a "musty" or "mousy" odor?
phenylketonuria
Is the reagent strip more sensitive to intact RBCs or hemoglobin?
hemoglobin
Most bacterial urinary tract infections are caused by what bacteria?
E. coli
The fecal fat assay is used to determine:
steatorrhea
True or False? The proximal convoluted tubules are located in the medulla portion of the kidney.
False
If a urine has abundant white foam, it may contain large amounts of what substance?
protein
Which ketone is the reagent strip most sensitive to?
acetoacetic acid
Which urinary crystal has a characteristic "whetstone" form?
Uric acid
Would the WBC count be low or high in a transudate fluid?
low (< 1,000 WBCs/mm3)