Creatinine, Serum
Test Mnemonic
CRET1
CPT Codes
- 82565 - QTY (1)
LOINC ®
45066-8
Aliases
- eGFR
- estimated GFR
Includes
- Estimated Glomerular Filtration Rate (Outpatient Only)
Performing Laboratory
Cleveland Clinic Laboratories
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Plasma | Lithium heparin PST (Lt. Green) | Centrifuge and refrigerate. | Submit in original tube or aliquot specimen into CCL aliquot tube |
Alternate Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Serum | SST (Gold) | Centrifuge and refrigerate. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.4 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | 7 days |
| Refrigerated | 7 days |
| Frozen | 3 months |
Days Performed
Sun - Sat
Turnaround Time
8 hours
Methodology
| Name | Description |
|---|---|
| Enzymatic |
Reference Range
| Creatinine, Serum | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| Male | 18 Years | 99 Years | Normal | 0.73-1.22 | mg/dL | Female | 18 Years | 99 Years | Normal | 0.58-0.96 | mg/dL |
Clinical Info
Neonates (premature): 0.33 to 0.98 mg/dL Neonates (full term): 0.31 to 0.88 mg/dL 2-12 months: 0.16 to 0.39 mg/dL 1-<3 years: 0.18 to 0.35 mg/dL 3-<5 years: 0.26 to 0.42 mg/dL 5-<7 years: 0.29 to 0.47 mg/dL 7-<9 years: 0.34 to 0.53 mg/dL 9-<11 years: 0.33 to 0.64 mg/dL 11-<13 years: 0.44 to 0.68 mg/dL 13-<15 years: 0.46 to 0.77 mg/dL References Creatinine plus ver.2 (CREP2) [package insert V 7.0 English]. Roche Diagnostics, Indianapolis, IN; September 2014