Hemoglobin

Also known as: Hb, Hgb

Blood Tests Blood
Patient Friendly Summary

Hemoglobin is your body's oxygen taxi. When it is low you may feel tired, dizzy, or short of breath. Mild anemia is common and often improves with diet and treatment your doctor suggests.

What this test means

Hemoglobin shows how well your blood can carry oxygen. It is part of the CBC and the key number for diagnosing anemia.

Why it is done

It is checked for tiredness, breathlessness, paleness, in pregnancy, before surgery, and during routine health checks.

Understanding your value

If your value is high

Higher values can be seen with dehydration, smoking, living at high altitude, or certain blood conditions.

If your value is low

Low hemoglobin (anemia) can be seen with iron or vitamin deficiency, blood loss, heavy periods, or chronic disease.

About the normal range

Typical adult ranges are roughly 13–17 g/dL for men and 12–15 g/dL for women, but always use the range printed on your own report.

When to consult a doctor

Consult your doctor if your value is below the reference range, or if you feel unusually tired, breathless on routine activity, or notice paleness.

Frequently Asked Questions

It is checked for tiredness, breathlessness, paleness, in pregnancy, before surgery, and during routine health checks. Your doctor will decide if this test is right for your situation.

Higher values can be seen with dehydration, smoking, living at high altitude, or certain blood conditions. This needs clinical correlation — always discuss your report with your doctor.

Low hemoglobin (anemia) can be seen with iron or vitamin deficiency, blood loss, heavy periods, or chronic disease. This needs clinical correlation — always discuss your report with your doctor.

A single value rarely tells the whole story. Results need to be read together with your symptoms, history, and other tests. Please consult your doctor for a proper interpretation.

Quick Facts

  • TestHemoglobin
  • Short formsHb, Hgb
  • Sample typeBlood
  • CategoryBlood Tests

Related Terms

Anemia Low Normal Range

Specialists

General Medicine Gynecology & Obstetrics Pediatrics

Related Tests

Test
Complete Blood Count

A panel that counts red cells, white cells, and platelets in your blood.

Explore
Test
Vitamin B12

Checks a vitamin essential for nerves and blood cell formation.

Explore
Disclaimer: This information is for patient education only and does not replace medical advice, diagnosis, or treatment. Always consult a qualified doctor.