Test Code TP or LAB118 Protein, Total, Serum or Plasma
Specimen Requirements
Container Type: |
Optimal: Gold or Mint* *For STAT requests |
Acceptable: Red or Green |
|
Optimal Collection Volume: |
4.5mL; full tube |
Minimum Volume: |
|
Collection Instructions: |
Gently invert the sample 5-6 times after collection. |
Specimen Transport: |
Refrigerate |
Processing Instructions: |
1. If serum, allow the specimen to clot for 30 minutes. 2. Centrifuge specimen within 2 hours of collection. 3. After centrifugation, specimen tubes without a gel barrier should have the serum or plasma aliquoted to a false bottom container. 4. Keep the serum or plasma refrigerated until testing can be performed. |
Specimen Stability
Specimen Type | Temperature | Time |
---|---|---|
Serum* | Refrigerated | 1 month |
Room Temperature | 6 days | |
Frozen | 1 year |
*Note: Heparinized plasma in gel separator tubes is less stable than serum and is only suitable for add-on testing up to 2 days following sample collection.
Specimen Rejection Criteria
Hemolysis | Mild OK; Moderate OK; Gross Reject |
Lipemia | Mild OK; Moderate OK; Gross Reject |
Icterus | Mild OK; Moderate OK; Gross Reject |
Other | Quantity not sufficient |
Useful For
Total protein measurements are used 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.
Methodology
Roche Cobas - Spectrophotometric
Reference Ranges
Age | Reference Range and Reporting Units |
---|---|
Newborn to 1 week | 4.6-7.0 g/dL |
1 week to 7 months | 4.4-7.6 g/dL |
7 months to 1 year | 5.1-7.3 g/dL |
1-2 years | 5.6-7.5 g/dL |
3 years and older | 6.0-8.0 g/dL |
Day(s) Performed
24/7
Expected TAT
Same day
Performing Laboratory
Bronson Laboratory, Chemistry - Kalamazoo, Battle Creek, Paw Paw, South Haven
Sample Retention Time
7 days
CPT Code
84155
LOINC Code
2885-2