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Soluble Transferrin Receptor : 91031
Test CodeTRSR or 91031
CPT Codes
84238
Instructions
Serum separator tube or plasma separator tube. Also acceptable: green (no gel) (sodium or lithium heparin) or lavender (EDTA).
Transport Container
Centrifuge serum or plasma separator tube and transport. If heparinized blood or lavender top, centrifuge and aliquot plasma into a standard transport tube. 1 mL (Min: 0.5 mL)
Transport Temperature
Refrigerated.
Specimen Stability
After separation from cells: Ambient: Not established; Refrigerated: 7 days; Frozen: 60 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Icteric.
Methodology
Nephelometry
Setup Schedule
Tuesday - Saturday
Report Available
1-3 days (From receipt at performing laboratory)
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
