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HelpTest Code CREAT Creatinine, Serum
Additional Codes
|
Test ID |
| CREAT |
|
EPIC Test ID |
| LAB66 |
Performing Laboratory
St. Luke's Hospital Cedar Rapids
Specimen Requirements
Container/Tube:
Preferred: Green-top (lithium heparin) tube
Acceptable: Gold-top serum gel tube, plain red-top tube, EDTA plasma
Minimum Specimen Volume: 1.7 µL plus a dead volume
Stability: Separated serum/plasma samples should be stored at 2 - 8ºC and analyzed
within 7 days. For longer storage, samples should be frozen at or below -20 ºC for 3 months.
Reference Values
|
Age |
Serum / Plasma Range (mg/dL) |
|
0-30 Days |
0.31-0.88 |
|
31 Days-12 Months |
0.16-0.39 |
|
1 Year-3 Years |
0.18-0.35 |
|
3-5 Years |
0.26-0.42 |
|
5-7 Years |
0.29-0.47 |
|
7-9 Years |
0.34-0.53 |
|
9-11 Years |
0.33-0.64 |
|
11-13 Years |
0.44-0.68 |
|
13-15 Years |
0.46-0.77 |
|
15+ Years |
Male: 0.67-1.17 Female: 0.51-0.95 |
eGFR (mL/min/1.73 m2) = 142 x min(Scr/κ, 1)α x max(Scr/κ,1)-1.200 x 0.9938Age x 1.012 [if female]
Where:
Scr is serum creatinine in mg/dL
Κ is 0.7 for females and 0.9 for males
α is -0.241 for females and -0.302 for males
min indicates the minimum of Scr/κ or 1, and
max indicates the maximum of Scr/κ or 1
The IDMS-traceable Chronic Kidney Disease Epidemiology Collaboration 2021 (CKD-EPI) equation and the isotope dilution mass spectrometry (IDMS) traceable. The reportable range is ≥90.00.
Day(s) Test Set Up
Monday through Sunday
Useful For
Creatinine measurements are used in the diagnosis and treatment of renal diseases, in monitoring renal dialysis, and as a calculation basis for measuring other urine analytes.
Methodology
Enzymatic
Test Classification and CPT Coding
82565
Report Available
STAT: Within 1 hour of receipt
Routine: Within 2 hours of receipt