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UW Health SMPH
American Family Children's Hospital

UW Hospital and Clinics Lab Test Directory

Test Name: Transferrin

Test Code(s): TRNSF / XTRANS

CPT Code(s): 84466

Methodology: Nephelometry

Clinical Significance: Measurement of transferrin levels in serum aids in the diagnosis of malnutrition, acute inflammation, infection and red blood cell disorders, such as iron deficiency anemia.

Days Performed: Daily, 24 hours.

Turnaround Time: Stat: 1 hour.
Routine: 4 hours.

Specimen Requirements

Specimen: Blood

Collection Container: Preferred: Green cap with yellow ring (PST)
Also Acceptable: Green top, Red cap with yellow ring (SST), Red top

Collection Volume: Preferred: 1 mL
Pediatrics: 0.4 mL

Sample Analyzed: Serum or plasma

Volume Required: Preferred: 0.5 mL
Pediatrics: 0.2 mL

Specimen Processing: Centrifuge within 2 hours of draw. If a complete barrier has not formed, transfer cell-free serum/plasma to clear plastic vial. Refrigerate.

Specimen Transport: Transport specimen to UWHC Core Laboratory (B4/220). Transport with coolant pack if coming from outreach location.

Stability: Refrigerated: 7 days
Frozen: Up to 3 months at -20 C. Note: Avoid repeat freeze and thaw cycles.


Reference Interval:
 Age  mg/dL
 0 days-2 months  100-230
 3 months-11 months  100-380
 1-17 years  100-360
 18 years and up  200-360


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