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Protein, Total
Test Code38463
CPT Codes
84155<br>Limited Access Code
Preferred Specimen
1 mL serum collected in a serum separator tube (SST)
Minimum Volume
0.5 mL
Other Acceptable Specimens
1 mL plasma collected in a plasma separator tube (PST)
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
Methodology
Spectrophotometric
Setup Schedule
Set up: Daily; Report available: Next day
Reference Range
Serum
Males (g/dL)
< 1 month: 4.1-6.3
1-5 months: 4.7-6.7
6-11 months: 5.5-7.0
1-19 years: 6.3-8.2
> or = 20 Years: 6.1-8.1
Females (g/dL)
<1 month: 4.2-6.2
1-5 months: 4.4-6.6
6-11 months: 5.6-7.9
1-19 years: 6.3-8.2
> or = 20 Years: 6.1-8.1
Plasma
Males (g/dL)
< 1 month: 4.4-6.6
1-5 months: 5.0-7.0
6-11 months: 5.8-7.3
1-19 years: 6.6-8.5
> or = 20 Years: 6.4-8.4
Females (g/dL)
<1 month: 4.5-6.5
1-5 months: 4.7-6.9
6-11 months: 5.9-8.2
1-19 years: 6.6-8.5
> or = 20 Years: 6.4-8.4
Males (g/dL)
< 1 month: 4.1-6.3
1-5 months: 4.7-6.7
6-11 months: 5.5-7.0
1-19 years: 6.3-8.2
> or = 20 Years: 6.1-8.1
Females (g/dL)
<1 month: 4.2-6.2
1-5 months: 4.4-6.6
6-11 months: 5.6-7.9
1-19 years: 6.3-8.2
> or = 20 Years: 6.1-8.1
Plasma
Males (g/dL)
< 1 month: 4.4-6.6
1-5 months: 5.0-7.0
6-11 months: 5.8-7.3
1-19 years: 6.6-8.5
> or = 20 Years: 6.4-8.4
Females (g/dL)
<1 month: 4.5-6.5
1-5 months: 4.7-6.9
6-11 months: 5.9-8.2
1-19 years: 6.6-8.5
> or = 20 Years: 6.4-8.4
Clinical Significance
Total protein is useful in evaluating patients for nutritional status, liver disease, protein-losing renal and gastrointestinal diseases, and many other medical conditions. Elevated concentrations may be observed in patients with monoclonal gammopathies, autoimmune hepatitis, inflammation, and other medical conditions.
