Refractometer
Optical instrument that measures the refraction
Supernatant
Liquid portion of a substance after centrifugation
24 hour urine specimen urinalysis
Urine specimen collected over a 24-hour period
Urinalysis
Evaluation of urine to obtain information about health and disease
Urine culture
Urine bacteria are altered to grow up to 24 to 48 hours. Bacteria are then identified
Urine specific gravity
Concentration of urine
Urobilinogen
Colorless compound formed by the breakdown of hemoglobin may indicate liver disease