Creatinine

Tube Type

Includes: Estimated Glomerular Filtration Rate

Reference Range	Normal:	Creatinine
Test ID		LAB383
EPIC ORDER		CREATININE
CPT Code(s)		82565
Group/Individual Test		Individual
Laboratory		Core Laboratory
Tube Station		Routine 30; STAT 888
Specimen	Routine:	1 mL blood/Li Heparin plasma separator tube / Also acceptable serum (Gold SST / Red Top Tube / or Orange SST)
Specimen	Micro:	200 µL blood/mint green top bullet/gold top/red top
Stability	Unspun	6 hours
	Spun/Separated, Room Temp:	48 hours
	Spun/Separated, Refrigerated:	8 days
	Spun/Separated, Frozen:	37 days
Availability		24 Hours/Day
Turnaround Time		STAT 1 hr., Routine 2 hrs.
		Age	Range (mg/dL)
		Day 1	0.42-0.92
		Day 2	0.36-0.78
		Day 3	0.33-0.70
		Day 4	0.31-0.66
		Day 5	0.28-0.62
		Day 6	0.27-0.60
		Day 7	0.26-0.58
		Week 2	0.24-0.52
		Week 3	0.21-0.46
		Week 4	0.19-0.42
		Month 2	0.17-0.37
		Month 3-9	0.16-0.34
		Month 10-2 years	0.17-0.36
		2-5 years	0.20-0.40
		5-12 years	0.30-0.60
		12-15 years	0.40-0.80
		15-18 years	Female	0.50-0.80
		15-18 years	Male	0.60-1.00
		>18 years	Female	0.55-1.02
		>18 years	Male	0.73-1.18
		eGFR	Range (mL/min/1.73m²)
		≥18 years	>60
		Adult reference ranges effective 10/23/2023 Pediatric reference ranges effective 7/13/2021
Comments		Creatinine testing is traceable to IDMS. Estimated glomerular filtration rate (eGFR) is calculated with the CKD-EPI 2021 equation using measured plasma or serum creatinine value, age, and sex for adult patients (≥18 years) in accordance with the National Kidney Foundation and American Society of Nephrology Task Force recommendations. Upper Reportable Limit of eGFR >90mL/min/1.73m² eGFR Calculator Please see Core Lab Memo #183 for information.

Reviewed by J. Carr on January 11, 2024

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514