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Test Code Transfern Transferrin, Serum

Reporting Name

Transferrin, S

Useful For

Screening for chronic iron overload diseases, particularly hereditary hemochromatosis

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type


Specimen Required


Preferred: Serum gel

Acceptable: Red top

Specimen Volume: 0.6 mL

Collection Instructions:

1. Serum gel tubes should be centrifuged within 2 hours of collection.

2. Red-top tubes should be centrifuged and aliquoted within 2 hours of collection.

Seattle Children's Hospital Note:

Collect 1.2 mL whole blood in a Red top.

Specimen Minimum Volume

0.25 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated (preferred) 7 days
  Frozen  180 days
  Ambient  7 days

Reference Values

200-360 mg/dL

Day(s) and Time(s) Performed

Monday through Saturday; Continuously

Test Classification

This test has been cleared or approved by the U.S. Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
TRSF Transferrin, S 3034-6


Result ID Test Result Name Result LOINC Value
TRSF Transferrin, S 3034-6

Method Description

Antitransferrin antibodies react with the antigen in the sample to form an antigen/antibody complex. Following agglutination, this is measured turbidimetrically. Addition of polyethylene glycol allows the reaction to progress rapidly to the end point and increases sensitivity.(Package insert: Roche TRSF2 reagent. Indianapolis, IN, 2005)

Reject Due To


Mild OK; Gross reject


Mild OK; Gross OK


Mild OK; Gross OK



Method Name

Immunoturbidimetric Assay


If not ordering electronically, complete, print, and send a Benign Hematology Test Request Form (T755) with the specimen (