Serum and urine are required. Serum must be drawn within 3 days of urine collection.
Serum
Specimen must arrive within 2 hours of draw.
Container/Tube: Serum gel tube
Specimen Volume: 2.5 mL of serum
Transport Temperature: Ambient
Collection Instructions:.Allow specimen to clot for 30 minutes. Spin in centrifuge after 30 minute interval. If there is a delay in transport of ≥2 hours, send specimen refrigerated.
Note: Patient’s height and weight are required.
Urine
Submit an entire 2-hour urine collection in a urine container. No preservative. Send specimen refrigerated.
Note: 1. Test can also be performed on urine collected with boric acid.
2. Patient’s height and weight are required.
3. Starting and ending times of collection are required.
Rate, Enzymatic
75-125 mL/minute
Monday through Sunday
81050 - urine timed measurement
82575 - creatinine