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HelpTest Code CR Creatinine
EHR Test Codes
| Test Code | Test Name | |
| Atlas | CR | Creatinine |
| Cerner | SCREA | Creatinine |
Specimen Requirements
Preparation of Patient:
None
Container Type:
Green Top 5mL Lithium Heparin Separator Tube
Or
Gold Top 6mL SST Gel & Clot Activator Tube
Specimen Type:
Plasma or Serum
Specimen Volume:
2.5 mL Plasma or Serum minimum .5 mL
Specimen Handling/Transport:
Separate plasma or serum from cells within 2 hours of collection.
Transport ambient room temperature.
Specimen Stability/Storage:
5 days refrigerated 2-8°C
Performing Laboratory
Munson Healthcare Laboratories
Chemistry Department
Priority, Frequency, & Turnaround
Priority:
STAT, ASAP, Non-Emergent
Frequency:
24 hours 7 days a week
Turnaround:
0 - 1 days
STAT 45 minute from receipt in lab
Methodology
Modified Jaffe, Kinetic
Reporting
Reference Range:
Male: 0.7 - 1.3 mg/dL
Female: 0.6 - 1.1 mg/dL
Critical Decision:
≥ 1.5 mg/dL
Note: Critical values are called to the provider and communicated as critical. Documentation of the call is recorded in the patient record.
Clinical Significance
Creatinine is measured primarily to assess kidney function. The GFR equation results are most valid for patients with some degree of renal impairment and are less reliable for serum creatinine values at or near the upper limit of the reference interval. A GFR value of <60, if persistent over a three-month period, suggests chronic renal disease. A GFR <15 is indicative of renal failure.
CPT Code(s)
82565