MCH · low result
What does a low MCH mean?
Short answer
Low MCH means each red cell carries less hemoglobin — the hallmark of iron deficiency and of thalassemia trait, and sometimes of anemia of chronic disease or lead exposure. It travels with a low MCV (small cells). Ferritin separates iron deficiency (low) from thalassemia trait (normal or high), which matters because iron is the wrong treatment for the latter.
Medically reviewed by Youmna DiStefano, MD · Last reviewed September 2026
What is the normal range for MCH?
- age 18+: 27.0 – 33.0 pg
Full reference table, citations and testing options: MCH biomarker page.
What are the common causes of low MCH?
- Iron deficiency (blood loss, low intake, malabsorption)
- Thalassemia trait (alpha or beta)
- Anemia of chronic disease or inflammation
- Lead poisoning, sideroblastic anemia (rare)
- Copper deficiency
What symptoms go with low MCH?
- Fatigue, breathlessness, pallor if anemic
- Often none in thalassemia trait
What do clinicians usually check next?
- Ferritin, iron and TIBC, CRP
- Hemoglobin electrophoresis if ferritin is normal and RBC count is high
- Find and treat the source of iron loss
Follow-up tests available at TestWell: Ferritin ($24.99), C-Reactive Protein (CRP) ($26.99).
How do you recheck MCH?
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 |
|---|---|---|---|---|
| General Wellness Panel | Panel · 4 tests | $89.99 | Yes | 1–3 business days |
| Blood Clotting Panel | Panel · 4 tests | $149.99 | No | 3–7 business days |
| Baseline Anemia Panel | Panel · 5 tests | $74.99 | Yes | 2–4 business days |
| CBC with Differential | Test · 14 biomarkers | $21.99 | No | 1–3 business days |
Common questions
Low MCH but normal hemoglobin — what does it mean?
Small, pale red cells without anemia is the classic thalassemia-trait picture, or very early iron deficiency. Ferritin and the red cell count tell them apart.
Educational content, not a diagnosis. Lab results are one input; a clinician interprets them with your history and exam.