Soluble Transferrin Receptor

0070283
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Example Reports
Abnormal
Normal

Ordering Recommendation

Mnemonic

STR

Methodology

Quantitative Immunoturbidimetry

Performed

Sun-Sat

Reported

Within 24 hours

New York DOH Approval Status

This test is New York DOH approved.

Specimen Required

Patient Preparation
Collect

Serum separator tube or plasma separator tube. Also acceptable: green (lithium heparin).

Specimen Preparation

Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.3 mL)

Storage/Transport Temperature

Refrigerated.

Unacceptable Conditions

Contaminated, severely hemolyzed, icteric, or lipemic specimens.

Remarks
Stability

After separation from cells: Ambient: 72 hours; Refrigerated: 1 week; Frozen: 1 month (avoid repeated freeze/thaw cycles)

Reference Interval

Male - 18 years & older: 2.2-5.0 mg/L
Female - 18 years & older: 1.9-4.4 mg/L

Interpretive Data

People of African descent and those residing at 5,200 feet (1,600 meters) above sea level were found to have a 6% higher normal value.  These differences were additive.  Reference intervals have not been established for pregnant females, patients under 18 years of age, and recent or frequent blood donors.

Serum soluble transferrin receptor increases in iron deficiency and is usually unaffected by chronic disease states.  In general, to increase sensitivity and specificity, the measurement of serum soluble transferrin receptor should be performed in combination with other tests of iron status, including ferritin, TIBC, and serum iron (refer to table below).


Tests for Changes in:
 Iron Deficiency Anemia
 Anemia of Chronic Disease
 Iron Deficiency & Anemia of Chronic Disease
Ferritin Iron Stores Low High Normal or High
TIBC Iron Status High Low Normal or High
Serum Iron Iron Status Low Low Low
sTfR Iron Status High Normal High

Compliance Category

FDA

Note

Hotline History

View Hotline History

 

Hotline History

Date of Change
Test Name Change
Methodology
Performance/Reported Schedule
Specimen Requirements
Reference Interval
Interpretive Data
Note
CPT Code
Component Change
Other Interface Change
New Test
Inactive
02/22/2022
X
N/A

CPT Codes

84238

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Components

Component Test Code* Component Chart Name LOINC
0070283 Soluble Transferrin Receptor 30248-9
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.

Aliases

  • sTfR
  • TfR
  • Transferrin Receptor
  • Transferrin Receptor Level
Soluble Transferrin Receptor