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Protein, Total, Plasma
Test Code90844
CPT Codes
84155
Preferred Specimen
1 mL plasma collected in a lithium heparin (green-top) tube
Minimum Volume
0.5 mL
Other Acceptable Specimens
Plasma collected in: Sodium heparin (green-top) tube
Instructions
Separate plasma from cells promptly
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days
Refrigerated: 7 days
Frozen: 28 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Serum • Any anticoagulant other than lithium or sodium heparin
Methodology
Spectrophotometry (SP)
Setup Schedule
Set up: Daily; Report available: 1-2 days
Reference Range
| Male | Female | |
| <1 Month | 4.4-6.6 g/dL | 4.5-6.5 g/dL |
| 1-5 Months | 5.0-7.0 g/dL | 4.7-6.9 g/dL |
| 6-11 Months | 5.8-7.3 g/dL | 5.9-8.2 g/dL |
| 1-19 Years | 6.6-8.5 g/dL | 6.6-8.5 g/dL |
| >19 Years | 6.4-8.4 g/dL | 6.4-8.4 g/dL |
Clinical Significance
The total plasma protein level is the sum of all circulating proteins, including fibrinogen, that are major components of blood. Total protein measurements are useful in the diagnosis and treatment of a variety of diseases involving the liver, kidney, or bone marrow as well as other metabolic or nutritional disorders.
