Transferrin · high result
What does a high Transferrin mean?
Short answer
Transferrin is the iron-carrying protein, and the liver makes more of it when iron is scarce — so a high transferrin is a classic companion to low ferritin in iron deficiency. Pregnancy and oral estrogens raise it too. Read with ferritin, serum iron and transferrin saturation, it is a supporting rather than stand-alone marker (TIBC is essentially the same information in different units).
Medically reviewed by Youmna DiStefano, MD · Last reviewed September 2026
What is the normal range for Transferrin?
- age 18+: 200 – 360 mg/dL
Often reflects iron deficiency.
Full reference table, citations and testing options: Transferrin biomarker page.
What are the common causes of high Transferrin?
- Iron deficiency
- Pregnancy, oral contraceptives, estrogen therapy
- Occasionally chronic blood loss before ferritin has fallen
What symptoms go with high Transferrin?
- Fatigue, breathlessness on exertion, hair shedding, restless legs if iron deficient
What do clinicians usually check next?
- Ferritin and transferrin saturation
- CBC
- Identify the source of iron loss — periods, gut, diet
Follow-up tests available at TestWell: CBC with Differential ($21.99), CBC (Complete Blood Count) ($21.99), Ferritin ($24.99).
How do you recheck Transferrin?
Prices are cash-pay; every order adds one $6 lab processing fee. Physician authorization is included; no insurance or referral needed.
| Test or panel | Type | Price | Fasting | Results |
|---|---|---|---|---|
| Transferrin | Test | $23.99 | Yes | 2–4 business days |
Common questions
High transferrin with a normal ferritin?
Often estrogen (pill or pregnancy). If ferritin is low-normal it may be early deficiency; saturation and a repeat clarify.
Educational content, not a diagnosis. Lab results are one input; a clinician interprets them with your history and exam.