Creatinine, Serum

Message

Test performed at York Hospital Laboratory.

Test Code

CREA

CPT Codes
82562

Includes

Creatinine, eGFR

Preferred Specimen

0.2 mL serum collected in a serum separator tube (SST)

Other Acceptable Specimens

0.2 mL serum collected in a no additive (red-top) tube, transferred to a plastic screw-cap vial
0.2 mL plasma collected in a lithium heparin (green-top) gel separator tube

Transport Temperature

Refrigerated

Specimen Stability

Room temperature: 5 days
Refrigerated: 30 days
Frozen: Indefinite

Methodology
Spectrophotometry

Setup Schedule

Daily

Report Available

Next Day
Available STAT 1/2 Hour

Reference Range

Age	Creatinine (mg/dL) Male	Creatinine (mg/dL) Female
<1 Week	0.60 - 1.10	0.60 - 1.10
1-4 Weeks	0.30 - 0.70	0.30 - 0.70
1-12 Months	0.20 - 0.40	0.20 - 0.40
1-2 Years	0.20 - 0.60	0.20 - 0.60
3 Years	0.30 - 0.70	0.20 - 0.60
4 Years	0.30 - 0.70	0.30 - 0.70
5 Years	0.50 - 0.80	0.30 - 0.70
6-8 Years	0.50 - 0.80	0.50 - 0.80
9 Years	0.50 - 0.80	0.60 - 1.00
10-13 Years	0.60 - 1.00	0.60 - 1.00
14-15 Years	0.70 - 1.10	0.60 - 1.00
16-19 Years	0.80 - 1.20	0.60 - 1.00
Adult	0.66 - 1.25	0.52 - 1.04

The MDRD study equation has not been validated in children under 18 years and pregnant women. If patient is African-American, multiply reported result by 1.21.

Critical Values
> 5.0 mg/dL

Clinical Significance

Serum creatinine is useful in the evaluation of kidney function and in monitoring renal dialysis. A serum creatinine result within the reference range does not rule out renal function impairment: serum creatinine is not sensitive to early renal damage, since it varies with age, gender, and ethnic background. The impact of these variables can be reduced by an estimation of the glomerular filtration rate.

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.