Total Protein

Label Mnemonic:	TP
Epic code:	LAB842
Downtime form:	Doctor/Provider Orders - Pathology Core and Specialty Care Nursery

Chemistry
6240 RCP
356-3527

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

Comments:

This test is also performed in the Iowa River Landing (IRL) clinical laboratory (for specimens drawn at that site).

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

CPT Code:

84155

See also:
Total Protein-Other, Body Fluid

See Additional Information:
Chemistry Pediatric Reference Ranges