Anyone aged 18 and older with normal blood pressure, a heart rate of 60–90 beats per minute, and a minimum body weight of 62 kg (for men) or 52 kg (for women) can become a blood donor.
There are several contraindications.
Absolute contraindications include blood-borne infections, cardiovascular, neurological, respiratory, digestive diseases, blood disorders, malignant tumors, and others.
Some contraindications are temporary, after which a person can donate blood. These include having a tattoo (6 months), certain medications, surgical interventions (6 months), vaccinations (from 10 days to 6 months), acute allergic reactions, acute respiratory infections, pregnancy (including the breastfeeding period), menstruation (at least 5 days after it ends), and others.