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Test Code RPNL Renal Function Panel

Specimen Type



Mint green top with gel separator

Preferred Volume

4 mL



Turnaround Time

3 hours

STAT Availability

Not Available

Test Usage

Refer to individual test entries.

Test Methodology

Spectrophotometric and ion-specific electrode.

Additional Information

Refer to individual test entries.

CPT Code


Test Includes

Panel includes: Albumin, calcium, phosphorous, carbon dioxide (bicarbonate), chloride, creatinine, glucose, potassium, sodium, urea nitrogen (BUN).  A calculated anion gap is included in this panel. A calculated glomerular filtration rate (GFR) is included in this panel for patients >18 years of age.

Critical Results


analyte Units Low limit High limit age
Calcium  mg/dL < 6.0 >13 Any Age
Carbon Dioxide, Total  mEq/L < 10 >40 Any Age
Glucose  mg/dL < 40 >500 Any Age
Glucose, Newborn  mg/dL < 30 >300 0-14 days
Phosphate  mg/dL < 1.0 ---- Any Age
Potassium  mEq/L < 2.8 >6.2 Any Age
Potassium, Hemolyzed  mEq/L < 2.8 >8 Any Age
Potassium Newborn  mEq/L < 2.8 >8 0-14 days
Sodium  mEq/L < 120 >160 Any Age

Test Limitations

Refer to individual test entries.

Reference Range

Refer to individual test entries.
Refer to creatinine for calculated GFR reference range.
The anion gap will be calculated as [Na] – [Cl + HCO3]. The reference range for this calculated result is 6 – 15 mEq/L.

Minimum Volume

2 mL

Fee Code