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| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Soluble Transferrin Receptor
Message| Interfaced |
Test Code
STFR
Quest Code
91031
Preferred Specimen
1 mL serum
Minimum Volume
0.5 mL
Other Acceptable Specimens
Plasma collected in: Sodium heparin (green-top) tube or lithium heparin (green-top) tube
Transport Container
Transport tube
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: Not established
Refrigerated: 7 days
Frozen: 60 days
Refrigerated: 7 days
Frozen: 60 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received room temperature • Icteric
Methodology
Nephelometry
Setup Schedule
Tues-sat
Report Available
3-4 days
Reference Range
0.76-1.76 mg/L
Clinical Significance
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.
Performing Laboratory
| Quest Diagnostics Nichols Institute-San Juan Capistrano, CA |
| 33608 Ortega Highway |
| San Juan Capistrano, CA 92675-2042 |
