Lab Exam 4 Flashcards
Benedict’s Test Results: No color change
Negative for glucose
Benedict’s Test Results: changed to Green
Slight Trace for glucose
Benedict’s Test Results: changed to Yellow
Positive for glucose
Benedict’s Test Results: changed to Orange
Strong Positive for glucose
Benedict’s Test Results: changed to Red
Very Strong Positive for glucose
What causes crystals in urine?
they are the byproduct of metabolism
What do Reagent Strips test for?
Glucose, Bilirubin, Ketone, Specific Gravity, Blood, pH, Protein, Urobilinogen, Nitrite, Leukocytes
What does the Urinometer measure?
Specific Gravity
What metabolic by-product from hemoglobin colors the urine yellow?
Urobilin, the byproduct of bilirubin
What is Hematuria?
Blood in the urine
What is Ketonuria?
Ketones in the urine
Elevated levels of WBC produce what condition of urine?
Pyuria
What cells would be found in urine that come from the Urethra & Bladder?
Epithelial cells & Squamous cells
What is Albuminuria?
Albumin in the urine
What is Glycosuria?
Glucose in the urine
What is Pyuria?
WBC’s or Pus in the urine
What is Hemoglobinuria?
excess Hemoglobin in urine
Why does diabetes mellitus cause Ketonuria?
the body cant produce enough insulin to break down glucose for energy, instead it breaks down lipids. Ketones are the byproduct of that breakdown.
Why does diabetes mellitus cause Glycosuria?
the body cant process the amount of blood glucose so it excretes it in the urine.
Why does a damaged Glomerulus cause Albuminuria?
glomerulus is a filter membrane, if damaged, the albumin protein that it would usually keep in blood can leak through into urine.
Why does a UTI cause Pyuria?
the body creates more WBC’s to fight the infection, some are excreted in the urine.
What is Urine testing and its Purpose:
Urinalysis
Determine the physical properties of urine.
Detect abnormal substances
Identify any sediments present
What is it called when Albumin is found in urine?
Albuminuria
What is it called when Glucose is found in urine?
Glycosuria
What is it called when WBC’s and Pus is found in urine?
Pyuria
What is it called when Hemoglobin is found in urine?
Hemoglobinuria
What is called when Ketones are found in urine?
Ketonuria
What is called when Blood is found in urine?
Hematuria
What tool is used when you want to know the specific gravity of urine?
Urinometer
