Library/Blood count/Hemoglobin/6.5

Hemoglobin of 6.5 g/dLWhat it means, and what usually happens next

6.5g/dL Hemoglobin
Severe anaemia range
81112131617.5

A hemoglobin of 6.5 g/dL is under 8.0 g/dL, the WHO's line for severe anaemia.

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Hemoglobin6.5g/dL
In g/L65
The usual rangeabout 12.0 to 15.5 g/dL in women and 13.0 to 17.5 g/dL in men

What usually happens next

Call your doctor today, and get urgent care if you're short of breath at rest, have chest pain, faint, or see blood in your stool or vomit.

The cause is looked for straight away: blood loss, iron, B12 and folate, and the kidneys are the usual first checks.

When a hemoglobin can read wrong

Dehydration concentrates the blood and pushes hemoglobin up; a lot of IV fluid or pregnancy dilutes it. Smoking and altitude raise it, and right after sudden blood loss it can still look normal for a few hours.

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Questions

Is a hemoglobin of 6.5 g/dL normal?

A hemoglobin of 6.5 g/dL is under 8.0 g/dL, the WHO's line for severe anaemia. The usual range is about 12.0 to 15.5 g/dL in women and 13.0 to 17.5 g/dL in men.

What is 6.5 g/dL in g/L?

65 g/L. Labs in different countries print Hemoglobin in different units; the meaning is the same.

What is a dangerously low hemoglobin?

The WHO calls under 8.0 g/dL severe anaemia. How urgent it is depends on symptoms and how fast it fell, so a result that low is a call to your doctor the same day.

Worked out by LifeFrom from the WHO's 2024 haemoglobin guideline, and not yet reviewed by a clinician. For your own understanding: only a lab test, read by your clinician, diagnoses anything.