By TheBloodApp Team·

Blood Donation During Pregnancy: Is It Safe Or Not?

A woman donates blood and is holding a heart-shaped ball. Next to her is a bag where blood is pumped, and medical donation supplies are located in a clinic.

Sitting relaxed and donating blood, a woman holds a heart-shaped ball as her blood fills a bag next to her.

Donating blood while pregnant is typically discouraged because of the risks involved for the mother and the fetus. Based on the American Red Cross, women cannot donate blood while they are pregnant and are not advised to donate blood until six weeks after they give birth. The body experiences significantly more demands while a woman is pregnant.

By the third trimester, blood volume nearly doubles (almost 50% greater than that of a woman who is not pregnant) to provide the fetus with the nutrition it needs as it grows. This additional blood volume is necessary to provide for the well-being of the baby while they are developing. In special cases with high risk for the mother, an autologous blood bank might be set up for blood to be donated to the mother before the baby is born.

There are several medical and physiological reasons why pregnant women are prevented from donating blood, all of which serve to protect the health and safety of the mother and the child. The major blood donation providers, such as the World Health Organisation and the American Red Cross, do not recommend that women donate blood while pregnant, and these recommendations should be strictly followed.

One of the reasons why blood is not recommended during pregnancy is the increased demand for iron. It is estimated that a pregnant woman requires between 350 and 500 milligrams of iron during her pregnancy, both for the growing baby and for the increased blood volume. Donating blood will obviously lower a woman's iron supply and, therefore, put her at a higher risk of iron deficiency anemia.

Being pregnant already reduces the number of red blood cells in the bloodstream, making many pregnant women anemic even without blood loss. However, donating blood will further reduce this balance and increase a woman's susceptibility to anemia, causing tiredness and fatigue, and sometimes premature labor or even a low birth weight baby. It may also increase the risk of placental abruption.

During pregnancy, the developing fetus is completely dependent on the mother for nutrients and oxygen, which are both carried by the blood supply; therefore, the mother's blood supply is very important. If some of the blood is taken, this might not supply the baby as effectively as it did. Pregnant women are also much more likely to feel lightheaded or faint. Taking some of their blood may make them feel faint, causing them to fall and become injured.

Certain antibodies are also present in the blood of pregnant women that are harmful to the recipient. So, these are the reasons why women are restricted from donating blood during pregnancy.

pregnant woman blood testing in a medical examination room, with a medical professional collecting blood from a female's arm in a medical clinic.

A pregnant woman, in a calm pose, receives a blood test where a doctor is drawing her blood.

Women cannot donate blood immediately after they give birth because their bodies require a sufficient recovery time after pregnancy and delivery. The American Red Cross and other organizations recommend that women wait for a minimum of 6 weeks after childbirth before attempting to donate blood.

This wait ensures that the woman's blood volume is fully restored and her iron stores have replenished themselves, as blood is lost in large quantities during delivery. The length of the waiting period depends on factors such as the type of delivery and overall health.

  • A minimum deferral period of 6 weeks after childbirth is recommended.
  • A longer deferral may be suggested if a woman is breastfeeding.
  • The woman's iron levels and hemoglobin must return to pre-delivery levels before donation is possible.
  • Nutritional intake and hydration should be maintained during the recovery period.
  • A doctor or other health professional should be consulted regarding the recommended time to resume donation.

Breastfeeding mothers, however, may need an additional recovery period because producing breast milk can put additional demands on the body. Women should be well-recovered and energetic before donating blood.

Value Of Donating Umbilical Cord Blood

Donating umbilical cord blood is a gift of life that will help patients after the birth of your baby. Umbilical cord blood is gathered from the umbilical cord and the placenta after the birth of the baby, and is rich in stem cells, which will grow into a variety of different types of blood cells. Umbilical cord blood is often used in the treatment of serious illnesses such as:

  • Leukaemia
  • Blood disorders of a genetic nature
  • And illnesses of the immune system, etc

If parents have not arranged for private storage of umbilical cord blood, they can choose to donate it to a public cord blood bank to help others. The method is painless, safe, and non-interfering.

Final Thoughts

The safest and most prudent path is to honor the physiological needs of both mother and child during pregnancy. Leading health organizations, including the American Red Cross and World Health Organization, strongly advise women not to donate blood during their pregnancy as it can pose risks, and pregnant women already have significant physiologic demands on their bodies and must have sufficient iron to support two lives.

Post-delivery, a woman can resume donation once her iron stores are replenished and her body has healed from childbirth. There are also alternatives, such as umbilical cord blood donation, that also play an important part in saving and prolonging lives.

When you make an educated decision with the help of a healthcare professional, you know what is best for your body and how you can best contribute to other human beings.

A medical assistant is using a syringe, collecting the blood from a woman's arm, in a bright, hygienic clinic space.

A blood sample is drawn by a doctor, who carefully takes blood from a woman's arm, in an organized and bright medical setting.

References

1. Biology Insights: https://biologyinsights.com/why-you-cant-give-blood-when-pregnant/

2. Cordlife India: https://www.cordlifeindia.com/blog/blood-donation-during-pregnancy/

3. Baby Center: https://www.babycenter.com/pregnancy/health-and-safety/can-you-donate-blood-while-pregnant_1246904

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