How High Hematocrit Is Dangerous?

A hematocrit that is too high can pose health risks.

Normal hematocrit levels are:

• Men: 40-50%
• Women: 36-44%
• Children: 33-36%

A hematocrit above 55% is considered abnormally high for adults. Some potential risks of an elevated hematocrit include:

• Thick, sludgy blood that doesn't flow well
• High risk of blood clots forming in arteries and veins
• Increased blood pressure and strain on the heart
• Vision problems due to lack of blood flow
• Headaches, dizziness, or weakness

Seeking medical care is recommended if your hematocrit is consistently above 55%. Treatments can help lower it to a safer level and minimize health complications.

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