Protein, Total, Serum

Test Code

754

CPT Code(s)

84155

Test Code

754

CPT Code(s)

84155

In-home collection may be available in your area for purchase through Quest Mobile.

Clinical Significance

Protein, Total, Serum - 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.

Test Resources

Test Guide

Chemistry Analytes: Clinical Utility and Test Interpretation

Test Details

Methodology

Spectrophotometry (SP)

Reference Range(s)

	Male (g/dL)	Female (g/dL)
<1 Month	4.1-6.3	4.2-6.2
1-5 Months	4.7-6.7	4.4-6.6
6-11 Months	5.5-7.0	5.6-7.9
1-19 Years	6.3-8.2	6.3-8.2
≥20 Years	6.1-8.1	6.1-8.1

LOINC® Codes, Performing Laboratory

Service Area must be determined

Methodology

Spectrophotometry (SP)

Reference Range(s)

	Male (g/dL)	Female (g/dL)
<1 Month	4.1-6.3	4.2-6.2
1-5 Months	4.7-6.7	4.4-6.6
6-11 Months	5.5-7.0	5.6-7.9
1-19 Years	6.3-8.2	6.3-8.2
≥20 Years	6.1-8.1	6.1-8.1

LOINC® Codes, Performing Laboratory

Service Area must be determined

Preferred Specimen(s)

1 mL serum

Minimum Volume

0.5 mL

Transport Container

Serum separator tube (SST)

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days

Reject Criteria

Gross hemolysis • Plasma

Setup Schedule

Service Area must be determined

Preferred Specimen(s)

1 mL serum

Minimum Volume

0.5 mL

Transport Container

Serum separator tube (SST)

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days

Reject Criteria

Gross hemolysis • Plasma

Setup Schedule

Service Area must be determined

In-home collection may be available in your area for purchase through Quest Mobile.

Test Details

Clinical Significance

Test Resources

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.

The tests listed by specialty and category are a select group of tests offered. For a complete list of Quest Diagnostics tests, please adjust the filter options chosen, or refer to our Directory of Services.