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Test Code CRE Creatinine, Plasma or Serum

Additional Codes

Ordering Mnemonic
CRE

 

Methodology

Modified Jaffe, Kinetic

Performing Laboratory

Holland Hospital Laboratory Services

Specimen Requirements

Submit only 1 of the following specimens:

 

Plasma

Container/Tube: Mint-top (lithium heparin) tube

Specimen: 1 mL of plasma

Collection Instructions:

Note: 1. Indicate plasma.
2. Label specimen appropriately (plasma).

 

Serum

Container/Tube: Serum gel tube

Specimen: 1 mL of serum

Collection Instructions:

Note: 1. Indicate serum.

2. Label specimen appropriately (serum).

Specimen Transport Temperature

Refrigerate

Day(s) Test Set Up

Monday through Sunday

Available STAT

Test Classification and CPT Coding

82565 (HH Bill Code 0205082)

Reference Values

CREATININE:

Males

0-5 years: 0.3-0.8 mg/dL

6-10 years: 0.3-1.0 mg/dL

11-17 years: 0.7-1.2 mg/dL

18-150 years: 0.6-1.4 mg/dL

Females

0-5 years: 0.3-0.8 mg/dL

6-10 years: 0.3-1.0 mg/dL

11-17 years: 0.4-1.0 mg/dL

18-150 years: 0.4-1.2 mg/dL

eGFR:

eGFR calculated with 2021 CKD-EPI equation using creatinine,
patient's age, and sex. Other factors, especially muscle mass,
may affect accuracy and need to be considered. In the absence
of evidence of kidney damage, neither eGFR category G1 nor G2
fulfill the criteria for Chronic Kidney Disease (CKD).
             
Category             eGFR             Terms         
G1                   ≥ 90          Normal or high
G2                  60 - 89         Mildly decreased*
G3a                 40 - 59         Mild to moderately decreased
G3b                 30 - 44         Moderately to severely decreased
G4                  15 - 29         Severely decreased
G5                   < 15           Kidney failure

*Relative to young adult level.
Classification of CKD based upon recommendations from the 
National Kidney Foundation.