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Test Code CREATN Creatinine, Serum or Plasma

Methodology

Enzymatic

Includes calculated glomerular filtration rate.

Specimen Requirements

Container/Tube:

Preferred: Lithium heparin (light green-top)

Acceptable: Serum Gel

 Draw blood, spin down and send 1 mL (pediatric:  0.2 mL) of plasma or serum.

Specimen Stability Information

 

Specimen Type

Temperature

Time

Plasma,lithium heparin / Serum

RT, spun

 7 days
 

Refrigerated,  spun

 7days

 

Reference Values

Age Male (mg/dL) Female (mg/dL)
0-13 days 0.3-1.0 0.3-1.0
14d-8 years 0.2-0.6 0.2-0.6
9y-10y 0.3-0.7 0.3-0.7
11y-12y 0.4-0.8 0.4-0.8
13y-15y 0.5-0.9 0.5-0.9
>15y 0.7-1.2 0.5-1.0

 

Reject Due To

 

Hemolysis

Mild:

ok

Gross:

ok

Lipemia

Mild:

ok

Gross:

ok

Icterus

Mild:

ok

Gross:

Reject

 

Day(s) Test Set Up

Monday through Sunday

CPT Coding

82565

Performing Laboratory

Huntsville Hospital Laboratory/Madison Hospital Laboratory

LOINC Coding

Test Name LOINC Code

Creatinine, Serum or Plasma

 2160-0