- Myth: I can’t donate if I have tattoos.
- Myth: I can’t donate if I got a piercing recently.
- Myth: I can’t donate if I’ve just been to the dentist.
- Myth: Blood can be manufactured.
- Myth: Blood donation is painful.
- Myth: Blood is only needed in times of emergency.
- Myth: Donating blood causes my body to start over producing blood cells.
- Myth: Donating blood makes you gain weight.
- Myth: Donating blood takes a long time.
- Myth: Donating blood will impact my ability to do my daily activities.
- Myth: Giving blood will harm me by taking away red cells or platelets that my body needs to function.
- Myth: I can catch an infectious disease by donating blood.
- Myth: I have a common blood type, so you don’t need my blood.
- Myth: Donating blood can harm my immune system.
- Myth: Other people are already giving enough blood.
- Myth: Vegetarians or vegans cannot donate blood.
- Myth: I cannot donate blood because I have diabetes.
- Myth: I can’t donate if I’ve had low hemoglobin (iron) levels in the past.
- Myth: I must make an appointment to donate blood.
- Myth: I should fast before I donate.
- Myth: I can’t donate blood when I’m on my menstrual cycle.
- Myth: Sometimes, needles and other materials are reused.
- Myth: I can’t donate blood because phlebotomists won’t be able to find my veins.
- Who can give blood?
- Where does my blood go?
- Which patients use what blood components?
- What types of photo ID are accepted?
- What tests are performed on blood?
- What happens when somebody tests positive for an infectious disease marker?
- What can I eat to raise my hemoglobin levels?
- Is it safe to receive blood transfusions?
- I don’t have sickle cell anemia, but I carry the trait. Can I still donate blood?
- What to expect after donating blood?
- How often can I donate blood?
- How much blood is taken?
- How long does it take?
- Can I donate blood for myself?
- When was Carter BloodCare founded?
- Can people with high blood pressure donate blood?
- Can people who have tested positive for HIV or AIDS donate blood?
- Can gay or bi-sexual men donate blood?
- What is Apheresis?
- How long can blood be stored?
- Are children allowed to accompany a donor to the donation location? Can I bring children with me when I donate?
- Can I donate if I have a physical disability and may need assistance?
Hemoglobin
Medically reviewed on July 15, 2026.
What is hemoglobin?
Hemoglobin is the oxygen-carrying protein in red blood cells. It gives blood its characteristic red color and delivers oxygen from the lungs to the tissues.
To qualify for blood donation, you must have a hemoglobin of 12.5 g/dL or higher for females and 13.0 g/dL or higher for males and those who prefer not to answer.