Creatinine, timed urine-85

Test info

  
Creatinine, timed urine
  
85
  
82570.2
  
CRT

Specimen

  
Urine, 24 hr
  

Collect specimen for 24 hrs, or, specified time period; note length of time on request.

How to collect a 24 hr urine sample

 

  
  1. Record total urine volume
  2. Mix 24 hour specimen well
  3. Transfer an 8 mL aliquot of a well-mixed 24 hour collection to a Urine aliquot transport vial/tube - 10mL (AHL)
  4. Patient's weight is required.
  

24 hr urine collection with 10g Boric Acid preservative

24 hr urine collection with HCl preservative (acceptable, but not preferred)

  

24 hr urine collection container, no additive (acceptable, but not preferred)

  

Without Preservative:

Refrigerated (preferred) - 6 days

Ambient - 2 days

Frozen - 6 months

 

With Preservative:

Refrigerated (preferred) - 8 days

Ambient - 3 days

Frozen - 3 weeks

  
  • Improper labels (unlabeled or mislabeled)
  • Hemolysis (some procedures)
  • Delay in transport
  • Improper storage temperature affecting results
  • Inappropriate timing of collection
  • Improper container
  • Leaking container resulting in compromised specimen
  • Quantity not sufficient (QNS)

Performance

  
AHL - Chemistry: C
  
Daily
  
1 day
  

Kinetic - Jaffe (Alkaline Picrate)

Clinical and Interpretive info

  
Male:    12 - 28 mg/kg/24hrs
Female: 11 - 26 mg/kg/24hrs

Billing

  
82570

Tracking

  
11/30/2001
  
05/02/2024
  
01/11/2024