Soluble Transferrin Receptor
Test Summary
Soluble Transferrin Receptor (sTFR) values can be within normal limits over a broad range of body iron stores and is elevated only when there is functional (i.e. cellular) iron deficiency. It is usually not affected by chronic disease states, sTFR levels are about 6% higher in people in high altitudes (above 5200 ft/1600 m) and in African-Americans. Reference value may not apply to pregnant females and recent or frequent blood donors.
Aliases
- N/A
Specimen Collection
Special Instructions
N/A
Preferred Specimen
1 mL serum
Minimum Volume
0.5 mL
Instructions
N/A
Patient Preparation
N/A
Storage
Transport tube
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
- Room temperature: Not established
- Refrigerated: 7 days
- Frozen: 60 days
Limitations
N/A
Other Acceptable Specimens
Plasma collected in: Sodium heparin (green-top) tube, lithium heparin (green-top) tube, or EDTA (lavender-top) tube
Unacceptable Specimens
Icteric samples
Order Code
STRANS
EPIC (Premier) Code
LAB1008
Includes
N/A
CPT Code
- 84238
Billing Code
- 670485
CPT Statement
Methodology
Nephelometry
FDA Status
FDA Approved
Physician Attestation of Informed Consent
N/A
Testing Laboratory
Quest Diagnostics Nichols Institute
33608 Ortega Highway
San Juan Capistrano CA, 92675
33608 Ortega Highway
San Juan Capistrano CA, 92675
Department
Reference Testing
Reference Range
0.76-1.76 mg/L
Setup Schedule / Expected Turnaround Time
Tuesday - Saturday; Report available: 2 - 4 days
Specimen Collection
Special Instructions
N/A
Preferred Specimen
1 mL serum
Minimum Volume
0.5 mL
Instructions
N/A
Patient Preparation
N/A
Storage
Transport tube
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
- Room temperature: Not established
- Refrigerated: 7 days
- Frozen: 60 days
Limitations
N/A
Other Acceptable Specimens
Plasma collected in: Sodium heparin (green-top) tube, lithium heparin (green-top) tube, or EDTA (lavender-top) tube
Unacceptable Specimens
Icteric samples
Result Information
Methodology
Nephelometry
Testing Laboratory
N/A
Reference Range
0.76-1.76 mg/L
Setup Schedule / Expected Turnaround Time
Tuesday - Saturday; Report available: 2 - 4 days