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Test Code CREAT.1 CREATININE

Methodology

Two-point Rate

Includes GFR (glomerular filtration rate (MDRD) (estimated)).

Useful in the diagnosis and treatment of acute and chronic renal disease, for dosage adjustment of renally excreted medications, and for monitoring renal transplant recipients.

Specimen Requirements

Submit only 1 of the following specimens:

 

Preferred:

 

Serum Gel Tube

Specimen Type: Serum

Container/Tube: Serum gel
Specimen Volume: 1 mL

Specimen Minimum Volume: 0.5 mL

Collection Instructions:

  1. Spin down within 4 hours of draw.
  2. Label specimen as serum.

 

Alternate:

Plain, Red-Top Tube

Specimen Type: Serum

Container/Tube: Red top
Specimen Volume: 1 mL

Specimen Minimum Volume: 0.5 mL

Collection Instructions:

1. Spin down within 4 hours of draw.

2. Label specimen as serum.

 

Specimen Type: Plasma

Container/Tube: Green top (lithium heparin)

Specimen Volume: 1 mL

Specimen Minimum Volume: 0.5 mL

Collection Instructions:

1. Spin down within 4 hours of draw.

2. Label specimen as plasma.

Day(s) Test Set Up

Monday through Sunday

Reference Values

Creatinine:   ≤ 7days                            0.2-1.1 mg/dL

                    >7 days-10 years             0.1-0.6 mg/dL

                    11 years-14 years            0.1-0.9 mg/dl

                    ≥14 years         Male:        0.7-1.3 mg/dL

                                             Female:   0.5-1.0 mg/dl

GFR (MDRD) Estimated:   >60 mL/min

Performing Laboratory

Logan Health Medical Center-Chemistry

Test Classification and CPT Coding

82565

Specimen Transport Temperature

Refrigerate