Urinalysis Flashcards
- excretion of glucose in the urine
- causes include too much sugar or diabetes mellitus
Glucose / Glycosuria
- the protein albumin is abnormally present in the urine
- nonpathological causes include excessive physical exertion, pregnancy, or diet; pathological causes include kidney trauma, ingestion of poisons, glomerulonephritits, heart failure, or severe hypertension
Albumin / Albuminuria
- presence of blood in urine
- causes include trauma, kidney stones, infection, or neoplasm
Blood / Hematuria
- excretion of free hemoglobin in the urine
- causes include transfusion reaction, severe burns, or hemolytic anemias
Hemoglobin / Hemoglobinuria
- excretion of abnormally large amounts of ketone bodies in the urine
- small amounts are normal; too much indicates starvation, low-carb diets, or untreated diabetes mellitus
Ketones / Ketonuria
- presence of bilirubin in the urine
- causes include liver disease or obstruction of bile ducts
Bile pigments / Bilirubinuria
(colorless) normally present; none can indicate renal disease or too much can indicate liver disease
Urobilinogen
- presence of pus in the urine
- typically from bacterial infection
- usually indicated a UTI (urinary tract infection)
White blood cells / Pyuria
- a salt or ester of nitrous acid, containing the anion NO2− or the group —NO2
- indicates a possible bacterial infection (E. coli or other Gram-negative bacteria)
Nitrites
(mineral crystals or hardened cell fragments from bacteria, red or white blood cells); indicates a variety of disorders
Casts
What is the normal amount of urine that is produced per day (for a healthy adult)?
1.5 liters/day
Average pH of urine:
6 (pH can range from 4.5 to 8.2, depending on diet)
Specific gravity range of urine:
1.001 (dilute) - 1.028 (concentrated)
The yellow color of urine is due to:
urochrome
Urine is composed of:
95% water and 5% solutes, mainly urea; also sodium, potassium, creatinine, and uric acid