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Lab Med 1 - UA
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Terms in this set (37)
What pigment gives urine its color?
What test is considered the screening method to determine the concentrating ability of the kidneys?
What test is considered the confirmatory method to determine the concentrating ability of the kidneys?
These meds can turn urine into what type of color?
Pyridium, Macrobid, Rifampin, Senna, Ibuprofen
Your patient has an amber color urine and + for bilirubin, which test should you do to confirm it?
FYI: Later, you order a microscopic test and see abnormal urine crystals (cubes, rhombic plates, amorphous needles)
If specific gravity is low, urine will be [concentrated/diluted]
Your pt's urine sample has been sitting in the lab room for 3 hours because your lab tech forgot to process the UA test. If she does it now, would the urine pH be acidic or alkaline?
alkaline (increases pH)
What type of epithelial cells can indicate necrosis of renal tubules in high numbers? If you see these, think necrosis!!!!
renal tubular cells
Lipids that cross glomerular membrane are absorbed in renal epithelial cells and become refractive known as what?
oval fat bodies
Large amount of which type of epithelial cells in female can indicate poor collection?
It's normally found from routine sloughing in the lining of GU tract and looks like fried eggs
squamous epithelial cells
What type of cells can be confused with yeast, oil, or air bubbles?
What type of test would you use to visualize small number of cells (RBCs and WBCs) and formed elements such as casts, epithelial cells, mucous, and sperm?
What is the most sensitive test for impaired liver function and aids in the early detection of liver disease?
Should you normally have some Urobilinogen in your urine?
If your Urobilinogen is low, what does this indicate?
If your Urobilinogen is high, what does this indicate?
yes, just a little (0.2 - 1 mg/dL)
Hemolytic disease, hepatic disease
If you shake the urine and _____ is present, a yellow foam will appear
What does a positive nitrite result indicate?
UTI - caused by gram negative bacteria
T/F: If nitrite is negative, it can't be a bacterial UTI
False - not all bacteria that cause UTIs are nitrite positive. Ex: Staph and Strep
Your pt's urine has a fruity odor and + ketones. What medical condition do you think she has?
Ketones in child less than what age is a critical value?
What are formed as result of fat metabolism?
What is the primary component that is measured in testing?
What's the confirmatory test for + ketones?
What glucose value on a dipstick is a critical value for pediatrics?
Your diabetic patient told you that he just started taking a new medication for his diabetes. His urine sample is glucose +.
What is class of anti diabetic drug could he be taking that can cause glucose to be excreted in urine?
SGLT 2 class
Urine protein electrophoresis show the presence of Bence Jones protein. Which malignant disease could this indicate?
What 2 tests can be used for confirmatory testing if the dipstick is protein +?
24 hr urine protein
urine protein electrophoresis
Urine dipstick is + for blood. How can you tell if it's hemoglobinuria or hematuria? What should you see in that test?
order microscopic test
-hematuria has speckled stick and microscopic RBCs
Is urine normally slightly acidic or alkaline?
acidic (pH ~6.0) d/t concentration of free H+
If you see amorphous urate, does this indicate acidic or alkaline urine?
If you see amorphous phosphate, does this indicate acidic or alkaline urine?
What type of casts suggest severe renal damage, or end stage renal disease?
B. Medium broad
What type of casts is this?
Formed in tubules
Refractive, jagged ends and notches
Stasis of urine flow, severe renal failure, amyloidosis, nephrotic syndrome
What type of casts is this?
Fat droplets/oval fat bodies attached to matrix
What can cause crystals in dehydrated pts and resemble uric acid crystals ?
Which abnormal urinary crystals are associated with liver disease?
leucine, tyrosine, bilirubin
Which abnormal urinary crystals are associated w nephrotic syndrome and look like "broken windowpanes" ?
the use of which 2 meds can cause abnormal urinary crystals?
Would the urine osmolality be increased or decreased if urine is concentrated?
what is a special test that can indicate early clinical proteinuria and help to detect early damage in DM, HTN, and preeclampsia ?
what is specific measurement for kidney function?
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