Can You Donate Blood While Pregnant? | What Blood Type Rejects Pregnancy?

Blood donation can be an easy way to help people in emergencies. But donating a woman’s blood during pregnancy is not eligible, which also advises you to wait at least six weeks after giving birth.

The 50% blood in your body increases during pregnancy. This is because you and your growing baby need it for maximum health and nutrition.

This article explores why pregnant woman should not donate their blood and when it is safe to donate after delivery.

I have already shared a post related to this topic Severe Anemia In Pregnancy I hope you read this post.

What Blood Type Rejects Pregnancy?
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Why can pregnant women not donate?

Pregnant women need more iron to help the fetus develop perfectly. Therefore, giving blood results in iron deficiency anemia can be problematic.

Anemia usually occurs during pregnancy, and iron deficiency anemia is the common type. A 2014-15 review reports that 52% of pregnant women worldwide have an iron deficiency.

Anemia occurs when women’s bodies do not make sufficient healthy RBC (red blood cells) or work efficiently, preventing the body from having enough iron.

Meanwhile, pregnancy creates a higher demand for iron to help the fetus grow. The average woman requires 350–500 milligrams of additional iron to prevent a deficiency during pregnancy.

I had earlier shared What Is Relation Between Anemia And Covid?. I hope you read the post.

When is it safe to donate again?

The American Red Cross requires pregnant women to wait six weeks after giving birth before donating blood.

However, the World Health Organization warns against donating blood during breastfeeding.

Instead, they suggest waiting nine months after the pregnancy ends or three months after the baby is weaned from breastfeeding.

This is because a nursing infant relies on the nutrients in breast milk for their growth.

I also wrote a tutorial on Breastfeeding And It’s Techniques that you can follow.

Cord blood donation

After delivery, a woman can donate the remaining blood in the cord and placenta.

Blood supply is special just because it contains stem cells, playing an important role in lifesaving treatments.

Stem cells from a cord blood donation helps in treating:

Anyone considering donating cord blood discusses the process with their doctor or hospital representatives.

I recommend you to read following posts that will help you: What Is Placenta Previa?


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How many blood tests during pregnancy?

To get started, you’ll need to: Can You Donate Blood While Pregnant?

There are four blood types (AB, A, B, or O), and you are also given a blood test to determine what type of blood you have. Knowing your blood group if you need blood, such as heavy bleeding during pregnancy or birth, is helpful.

what blood type rejects pregnancy?

When a woman and her future baby carry Rhesus (Rh) protein factors, their condition is Rh incompatibility. It happens when a woman is Rh-negative and the baby is Rh-positive. The Rh factor is a particular protein found on the outside of your red blood cells.

How does the Rh factor affect pregnancy?

A positive and negative symbol after your blood type indicates the Rh factor. For example, “blood type: AB+” is written on your medical record.

Your Rh factor doesn’t affect your health. However, the Rh factor becomes necessary during pregnancy. If a woman is Rh-negative and her future baby is Rh-positive, her body will approach the Rh-positive protein as a different object if her immune system is exposed.

This means that if blood cells from the baby cross the bloodstream during pregnancy, delivery, and labor, your immune system will make antibodies on your baby’s red blood cells.

If you have an Rh-negative blood type, you’re considered “sensitized” to positive blood types once your body has produced these antibodies.

This means that your body sends these antibodies across the placenta to attack your baby’s red blood cells (RBD). Your placenta is the organ that connects your baby and you.

Here are a few articles to check out:

How is Rh incompatibility treated?

Treatment for the effects of incompatibility. In some cases, the baby is treated after birth with:

You also prevent the effects of Rh incompatibility by getting an injection of Rh immune globulins during your first trimester, miscarriage, or bleeding during your pregnancy.

I recommend you to read following posts that will help you: How Does Phototherapy Work For Jaundice?


Donating the blood of a woman during pregnancy is not eligible at all. This is because the body needs the blood and its iron to carry the fetus.

Donating blood during pregnancy increase the risk of complications such as anemia and compromise fetal health.

A healthcare provider can advise a woman about the right time to continue donating blood and help facilitate cord donation.

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