Protein, Total CPT: 84155

Expected Turnaround Time

Within 1 day

Specimen Requirements


Serum (preferred) or plasma.


1 mL

Minimum Volume

0.5 mL


Gel-barrier tube, transport tube, green-top (heparin) tube, or lavender-top (EDTA) tube.


Separate serum or plasma from cells within four hours of collection.

Storage Instructions

Maintain specimen at room temperature.

Stability Requirements

Temperature Period
Room Temperature 14 days
Refrigerated 14 days
Frozen 14 days
Freeze/thaw/ cycles Stable x 3

Patient Information

As part of a general health checkup, to determine your nutritional status or to help diagnose certain liver and kidney disorders as well as other diseases.

When you have a routine health exam; when you experience unexpected weight loss or fatigue, or when your healthcare practitioner thinks that you could have symptoms of a liver or kidney disorder.

A blood sample drawn from a vein or by fingerstick or, in the case of newborns, by heelstick.