Should you donate blood before or after period?

It is generally recommended not to donate blood during an active menstrual period due to potential changes in blood composition and blood viscosity associated with menstruation. These factors can affect the accuracy of blood tests and may decrease the quality of the donated blood. Additionally, blood loss during menstruation may make some individuals feel weaker or more susceptible to fatigue during the donation process.

Therefore, to maintain blood quality and donor safety, it is often advised to schedule a blood donation for a day after the menstrual period ends and iron levels have had a chance to replenish. By doing so, donors can ensure that their hemoglobin levels are suitable for donation, and they can feel well and avoid discomfort during the blood donation process. Menstruation itself does not disqualify an individual from donating blood, but timing becomes a consideration for donor well-being and blood quality purposes.