Total Protein
Label Mnemonic: TP
Epic code: LAB842
Order form: Laboratory Requisition
Supply order: Supply Order Form
Billing: Billing Policies
CPT code: 84155
Specimen(s):
Plasma
Collection Medium:
Plasma Separator Tube 4.5 mL
Alternate Collection Media:
Call laboratory for additional acceptable specimen collection containers.
Minimum:
3 mL whole blood in light green top tube or ONE Microtainer® for pediatric patients.
Testing Schedule:
24 hrs/day, 7 days a week, including holidays.
Turn Around Time:
1 hour (upon receipt in laboratory)
Reference Range:
Adult  6.0 - 8.0 g/dL

Pediatric Reference Ranges
                 Males         Females
Birth-31 days    4.1-6.3 g/dL  4.2-6.2  g/dL
1-6 months       4.7-6.7       4.4-6.6
6 months-1 year  5.5-7.0       5.6-7.9
1-18 years       5.7-8.0       5.7-8.0
Test Limitations:
Criterion: Recovery within plus or minus 10% of initial values.

Icterus: No significant interference up to an I index of 40 
corresponding to approximately 40 mg/dL of conjugated and unconjugated 
bilirubin. 

Hemolysis: No significant interference up to an H index of 500 
(approximate hemoglobin concentration: 1000 mg/dL). 

Lipemia (Intralipid): No significant interference up to an L index of 
2000 (approximate triglycerides concentration: 4000 mg/dL). There is 
poor correlation between turbidity and triglycerides concentration. 

Dextran up to concentrations of 30 mg/mL does not interfere.

20 commonly used tested pharmaceuticals did not interfere with the 
assay.
Methodology:
Colorimetric
Sample Processing:
Centrifuge at a speed and time necessary to get barrier separation of plasma/serum and cells within 1 hour of collection. Send specimen in original tube. Do Not transfer to another tube.
Each sample must be labeled with at least TWO full patient identifiers (First/Last Name & DOB are sufficient for non-UIHC affiliated clients) to avoid sample rejection/delays.
Sample Storage:
Refrigerate.
Transport Instructions:
Place labeled specimen into zip-lock type biohazard bag; seal bag.
Place completed requisition into outside pocket of bag.
Transport in cooler with refrigerated coolant packs.
CPT Code:
84155
 
See also:
Total Protein-Other, Body Fluid