Metabolic Panel CPT: 80048

Expected Turnaround Time

Within 1 day

Test Includes

BUN; BUN:creatinine ratio; calcium, serum; carbon dioxide, total; chloride, serum; creatinine, serum; eGFR calculation; glucose, serum; potassium, serum; sodium, serum.

Specimen Requirements


Serum (preferred) or plasma


1 mL

Minimum Volume

0.5 mL


Gel-barrier tube (send entire tube) is preferred. Red-top tube or green-top (heparin) tube is acceptable.


Draw blood in a gel-barrier tube and centrifuge. If red-top tube or green-top tube is used, centrifuge within 45 minutes of draw, remove the serum or plasma, and place in a transport tube and tightly stopper the tube.

Storage Instructions

Maintain specimen at room temperature.

Stability Requirements

Temperature Period
Room Temperature 24 hours
Refrigerated 3 days
Frozen 1 month
Freeze/thaw/ cycles X 3

Patient Preparation

Patient should fast for 12 hours preceding collection of specimen.

Patient Information

To give your healthcare provider important information about your body’s metabolism, including the current status of your kidneys as well as electrolyte and acid/base balance and level of blood glucose.

As part of a routine health exam; when you are hospitalized, in the emergency room.

A blood sample drawn from a vein in your arm.

You may be instructed to fast (nothing but water) for 10 to 12 hours prior to the blood draw. Depending on the reason for ordering the BMP, it may be drawn after fasting or on a random basis. Follow any instructions you are given.