Hemoglobin · high result
What does a high Hemoglobin mean?
Short answer
A high hemoglobin most often reflects dehydration, smoking, living at altitude, or sleep apnea and other causes of low oxygen; testosterone therapy is a common cause in men receiving it. Persistently high values without those explanations raise the question of polycythemia vera, a bone-marrow disorder, checked with an EPO level and JAK2 gene test.
Medically reviewed by Youmna DiStefano, MD · Last reviewed September 2026
What is the normal range for Hemoglobin?
- Male, age 18+: 13.5 – 17.5 g/dL
- Female, age 18+: 12.0 – 15.5 g/dL
Often reflects dehydration, smoking, or living at high altitude. In rare cases it can signal a blood disorder.
Full reference table, citations and testing options: Hemoglobin biomarker page.
What are the common causes of high Hemoglobin?
- Dehydration
- Smoking, chronic lung disease, sleep apnea, high altitude
- Testosterone or anabolic steroid use
- Polycythemia vera (JAK2 mutation)
- Kidney tumors or cysts producing erythropoietin (rare)
What symptoms go with high Hemoglobin?
- Often none
- Headache, dizziness, flushing, itching after warm showers
- Blood clots in severe polycythemia
What do clinicians usually check next?
- Repeat hydrated
- Oxygen saturation, sleep apnea screening, smoking history
- Erythropoietin and JAK2 testing when persistently high
How do you recheck Hemoglobin?
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
I take testosterone and my hemoglobin is high. Is that expected?
It's a known effect. Guidelines have prescribers monitor hematocrit and adjust or pause therapy above a threshold (commonly 54%).
Sources
Educational content, not a diagnosis. Lab results are one input; a clinician interprets them with your history and exam.