As your due date gets closer, you may start hearing about antenatal colostrum collection—the practice of hand expressing and freezing colostrum during pregnancy.
Some parents are told it’s essential. Others have never heard of it.
So, what’s the truth?
For some families, collecting colostrum before birth can be a helpful way to prepare for breastfeeding. For others, it isn’t necessary. Understanding who may benefit—and when it’s not recommended—can help you decide if it’s right for you.
First, what is colostrum?
Colostrum is the first milk your body produces. It begins developing during pregnancy and is available before your mature milk comes in after birth.
Although it’s produced in very small amounts, colostrum is exactly what a newborn’s stomach is designed to hold during the first few days of life.
It’s rich in antibodies, immune factors, protein, and nutrients that help protect your baby while supporting their early growth and development.
What is antenatal colostrum collection?
Antenatal colostrum collection simply means using your hands—not a breast pump—to express small amounts of colostrum during the last few weeks of pregnancy and freezing it in sterile syringes for use after your baby is born.
Many parents begin around 36 to 37 weeks of pregnancy, but the right timing depends on your individual pregnancy and should always be discussed with your prenatal care provider.
Who may benefit from collecting colostrum?
While it isn’t necessary for everyone, antenatal colostrum collection may be especially helpful if:
- You have gestational or pre-existing diabetes.
- You’re expecting twins or higher-order multiples.
- Your baby is expected to spend time in the NICU.
- A feeding challenge is anticipated after birth.
- You’re planning a cesarean birth and may experience a delay in the first feeding.
- You simply want to become more comfortable with hand expression before your baby arrives.
Having a small amount of frozen colostrum available can sometimes reduce the need for formula supplementation if your baby requires additional feeds in the first days after birth.
Who should not collect colostrum?
Antenatal hand expression isn’t appropriate for every pregnancy.
You should always speak with your obstetric provider before beginning, especially if you’ve been advised to avoid nipple stimulation or if your pregnancy has additional risk factors.
This may include:
- A history of preterm labor or current signs of preterm labor
- Placenta previa or certain placental complications
- Cervical insufficiency
- Vaginal bleeding during pregnancy
- Any other condition where your healthcare provider recommends avoiding nipple stimulation
Your provider knows your pregnancy best and can help you determine whether antenatal colostrum collection is safe for you.
Can collecting colostrum cause labor?
This is one of the most common questions I hear.
Research suggests that hand expressing colostrum after an appropriate gestational age does not appear to increase the risk of labor in otherwise low-risk pregnancies. However, every pregnancy is different.
Because nipple stimulation can cause the release of oxytocin, it’s important to have a conversation with your prenatal care provider before starting. With hand expression, though, nipple stimulation is minimal compared to pumping.
What if I don’t get any colostrum?
This is where many parents become discouraged.
Some people collect several syringes of colostrum.
Some collect only a few drops.
Some don’t see anything at all.
All of these can be completely normal.
The amount of colostrum you’re able to express during pregnancy does not predict your future milk supply.
Your body responds differently during pregnancy than it does after birth, when the delivery of the placenta triggers the hormonal changes that support mature milk production.
Why I like teaching hand expression before birth
One of my favorite reasons to teach hand expression during pregnancy has very little to do with building a freezer stash.
It builds confidence.
After your baby is born, you may need to hand express if your baby is sleepy, having difficulty latching, or needs a little extra encouragement to feed.
Learning this skill before birth means it’s one less thing to learn while you’re recovering, adjusting to life with a newborn, and running on very little sleep.
Many parents also tell me that becoming familiar with their own bodies before delivery makes breastfeeding feel a little less intimidating.
The bottom line
Antenatal colostrum collection is a tool, not a requirement.
For some families, it provides reassurance and an extra layer of preparation. For others, it simply isn’t necessary.
You don’t need a freezer full of colostrum to have a successful breastfeeding journey.
The most valuable preparation isn’t collecting the most milk—it’s understanding what to expect, knowing when to ask for help, and entering your baby’s first days with confidence.
If you’re interested in collecting colostrum before birth, start by having a conversation with your prenatal care provider and an IBCLC. Together, you can decide whether it’s a good fit for your pregnancy and create a plan that supports both you and your baby.