ARUP's Laboratory Test Directory

Glomerular Filtration Rate, Estimated : 0020725

Mnemonic: GFRE

Methodology: Quantitative Enzymatic
Performed: Sun-Sat
Reported: Within 24 hours
Specimen Required: Collect: Plasma separator tube or serum separator tube. Also acceptable: Lavender (EDTA).

Specimen Preparation: Allow specimen to clot completely at room temperature. Separate serum or plasma from cells ASAP or within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.2 mL)

Storage/Transport Temperature: Refrigerated.

Unacceptable Conditions: Specimens obtained through catheters used to infuse hyperalimentation fluid. Specimens collected with potassium oxalate/sodium fluoride or sodium citrate.

Stability (collection to initiation of testing): After separation from cells: Ambient: 4 hours; Refrigerated: 1 week; Frozen: 6 months
Reference Interval:
 
Creatinine
Age Male Female
0-30 days 0.50-1.20 mg/dL 0.50-0.90 mg/dL
31-364 days 0.40-0.70 mg/dL 0.40-0.60 mg/dL
1-3 years 0.40-0.70 mg/dL 0.40-0.70 mg/dL
4-6 years 0.50-0.80 mg/dL 0.50-0.80 mg/dL
7-9 years 0.30-0.60 mg/dL 0.30-0.70 mg/dL
10-11 years 0.30-0.70 mg/dL 0.40-0.80 mg/dL
12-13 years 0.40-0.80 mg/dL 0.40-0.80 mg/dL
14-15 years 0.40-1.10 mg/dL 0.30-0.90 mg/dL
16-18 years 0.60-1.20 mg/dL 0.50-1.00 mg/dL
19 years and older 0.40-1.20 mg/dL 0.40-1.20 mg/dL
Calculation By report  
Interpretive Data: To estimate the glomerular filtration rate for African Americans, multiply the result provided by 1.21. The equation used to estimate the glomerular filtration rate has only been validated for patients 18 to 70 years of age.
CPT Code(s): 82565
Cross References: Estimated Glomerular Filtration Rate (Glomerular Filtration Rate, Estimated)
 
 

 

 

 
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