Red Blood Cells (RBC)
Red blood cells carry oxygen from your lungs to every tissue. The RBC count is how many of them are in a microlitre of blood, and it's read together with hemoglobin and hematocrit.
Your reading
This app uses 4.0–5.5 million cells per microlitre; men usually sit higher than women. A low count is one sign of anemia (from low iron, B12 or folate, or blood loss). A high count can come from dehydration, living at altitude, smoking or testosterone therapy.
What may help
- —Iron, B12 and folate from food (meat, fish, eggs, legumes, leafy greens) if your count is low
- —Drinking enough before the test, since dehydration makes the count look higher than it is
- —Checking ferritin alongside it, because low iron stores show up before the RBC count drops
When to talk to a doctor
If it's low with tiredness, breathlessness or pale skin, or high without an obvious reason like altitude or dehydration.
Common questions
What is Red Blood Cells?
Red blood cells carry oxygen from your lungs to every tissue. The RBC count is how many of them are in a microlitre of blood, and it's read together with hemoglobin and hematocrit.
What is a normal Red Blood Cells level?
Daygo uses 4.0–5.5 M/µL as the reference range. This app uses 4.0–5.5 million cells per microlitre; men usually sit higher than women. A low count is one sign of anemia (from low iron, B12 or folate, or blood loss). A high count can come from dehydration, living at altitude, smoking or testosterone therapy.
How can I improve my Red Blood Cells?
Iron, B12 and folate from food (meat, fish, eggs, legumes, leafy greens) if your count is low. Drinking enough before the test, since dehydration makes the count look higher than it is. Checking ferritin alongside it, because low iron stores show up before the RBC count drops.
When should I see a doctor about Red Blood Cells?
If it's low with tiredness, breathlessness or pale skin, or high without an obvious reason like altitude or dehydration.
Source: MedlinePlus (NIH): Complete Blood Count. Reference ranges are standard adult intervals — your own lab may report a different range for your age, sex, or method. This isn't medical advice; always go by the range on your actual results and talk to a clinician about anything that concerns you.