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Also reported in: L/L
The proportion of red blood cells in your blood is within the normal range, indicating healthy blood oxygen-carrying capacity.
Hematocrit measures what percentage of your blood is made up of red blood cells. At this critical level, your blood is mostly liquid with very few cells, very limiting how much oxygen your organs receive.
This is an emergency. Go to the emergency room immediately — a blood transfusion may be necessary.
Hematocrit: {{value}} {{unit}} — very low (ref: {{low}}–{{high}})A low hematocrit means a smaller-than-normal proportion of your blood is made up of red blood cells. This is another way of detecting anemia — less oxygen gets to where it needs to go.
Work with your doctor to find the cause: iron deficiency, B12/folate deficiency, blood loss, or chronic disease are the most common reasons. Treatment is usually very effective.
Hematocrit: {{value}} {{unit}} — below reference range (ref: {{low}}–{{high}})You're sitting at the lower edge of the normal range. You may not have obvious symptoms yet, but you could experience mild fatigue, especially with physical exertion.
Check your iron and B12 intake. Repeat the test in 2–3 months, especially if fatigue is a complaint.
Hematocrit: {{value}} {{unit}} — borderline lowThe proportion of red blood cells in your blood is within the normal range, indicating healthy blood oxygen-carrying capacity.
No action needed. Continue a balanced diet with adequate iron and protein.
Hematocrit: {{value}} {{unit}} — within reference rangeYour hematocrit is right in the healthy midrange, indicating an excellent balance of red blood cells in your circulation.
Keep supporting your red blood cell production with good nutrition and regular health check-ups.
Hematocrit: {{value}} {{unit}} — optimalA mildly elevated hematocrit often simply reflects dehydration — with less fluid in the blood, the red cells appear more concentrated. It can also reflect altitude living or smoking.
Make sure you're well hydrated, especially before future blood tests. Mention to your doctor if you smoke.
Hematocrit: {{value}} {{unit}} — borderline highA consistently high hematocrit means your blood is thicker than normal, which slows circulation and increases clotting risk. Chronic oxygen deprivation (from lung disease or sleep apnea), smoking, or a bone marrow condition can cause this.
See your doctor to investigate the cause. Persistent high hematocrit raises stroke and clot risk and needs to be addressed.
Hematocrit: {{value}} {{unit}} — above reference range (ref: {{low}}–{{high}})At this level, your blood is so thick and viscous that circulation through small vessels becomes seriously impaired. The risk of stroke, blood clots, and heart attack is noticeably elevated.
Seek emergency medical care today. This requires immediate evaluation and likely urgent intervention.
Hematocrit: {{value}} {{unit}} — very high (ref: {{low}}–{{high}})Upload your lab report and get your actual values interpreted in plain English — instantly, with no medical training required.