Harvesting Colostrum: How & Why

For many new mothers, colostrum is often described as “liquid gold,” and for good reason. This thick, yellowish substance is your first breast milk that starts production during pregnancy, and it’s packed with nutrients and antibodies essential for a newborn’s health. But what exactly is colostrum, why is it so important, and how do you harvest it? Let’s talk about it!

What is Colostrum?

Colostrum is the first stage of breast milk produced by the body, usually in small amounts, beginning as early as the second trimester of pregnancy. It looks different from mature milk, and it does have a different make up than the milk you'll produce later, but it is most definitely still considered breast milk.

A common misconception regarding colostrum is that it's not "real" breast milk and that because it is relatively low in volume, that it's not enough for your baby. Because many parents aren't properly educated about this, they end up supplementing with formula unnecessarily. Colostrum is thicker, richer in color, and very nutritionally dense, making it highly beneficial for your baby. And in the first several days of your baby's life, their stomach is very small--as small as a marble. So they don't need huge volumes of milk to feel full. If there are medical concerns that require supplementation, or you've decided that's the best path for your family, formula is more than okay to give your baby! But don't be afraid if you only see very small amounts of milk in those first few days. This is totally normal. 💛

When Should You Harvest Colostrum?

Colostrum can be harvested as early as 37 weeks of pregnancy. This practice is especially beneficial if you anticipate complications that could delay breastfeeding immediately after birth such as a planned C-section, or if you think your baby might need some additional nutritional support, such as if you’re expecting twins, have gestational diabetes, your baby has a known cleft lip or palate, etc. Having some colostrum on hand in advance can serve kind of like an insurance policy for your breastfeeding journey.

Because the research on this is conflicting, there are often differing opinions among experts on whether harvesting colostrum is likely to induce labor. The nipple stimulation from collecting colostrum releases oxytocin which can in turn cause contractions and potentially premature labor, so you should avoid it if you are earlier than 37 weeks or if you have any conditions that make your pregnancy high-risk. This is why it's important to consult with your healthcare provider before starting, as every pregnancy is unique, and you’ll want to ensure it’s safe for you and your baby.

Harvesting Colostrum Supplies

You really don't need a lot to collect colostrum, but it can be a little intimidating for some moms at first, so having the right supplies can help you feel more confident and prepared! You'll need something to collect your colostrum in, something to store it in, something to label it with, and something to bring it to the hospital in. I've tried many different colostrum harvesting products and I've narrowed down my favorites for you at the link below! 👇🏽

Shop harvesting colostrum supplies here!

How to Harvest Colostrum

Harvesting colostrum is a relatively simple process, but it may take some practice to get comfortable. Here's a step-by-step guide to harvesting colostrum:

1. Prepare: Wash your hands thoroughly, and have syringes or containers ready to store the colostrum you collect. Find a comfortable space where you feel relaxed.

2. Warm and Massage: Gently massage your breast all over for a few minutes to get the milk flowing. Applying a warm compress for a few minutes can also help. A great time to express can be after a warm shower for this reason, plus it helps you relax!

3. Hand Expression: Use your thumb and fingers to make a C shape. Gently press back towards your chest and then gently squeeze your breast tissue as you move your hand away from your body and inward toward the nipple. You do not need to squeeze or stretch the nipple itself. Continue this motion in a rhythmic pattern until breast milk is released. 

4. Collect: Carefully collect the colostrum using a small syringe. You will likely see very little volume, especially at first—typically a few drops to a few mLs—which is totally normal.

5. Label & Store: Label the syringe or container with the date and store it in the freezer. Colostrum is breast milk, so you follow breast milk storage guidelines when using it. It can be frozen for up to six to twelve months. Use ice packs if you’re transporting it to the hospital.

6. Repeat:  When you're ready to go to the hospital, pack the colostrum with ice packs in a cooler.

Tips for Success

• Start hand expressing a few minutes a day and gradually build up to 5-15 minutes.
• Be patient! Harvesting colostrum takes time, especially if it's your first attempt. Stay relaxed and calm as this helps with oxytocin release.
• Ensure you’re staying hydrated and eating a balanced diet. Good nutrition supports colostrum production.
• You can contact your hospital before delivery to see if there's any special instructions they have regarding the safe storage of your colostrum while you're in the hospital.

While harvesting colostrum can be highly beneficial, it’s not necessarily for everyone. If your pregnancy is low-risk, and you plan to breastfeed soon after delivery, your body will naturally produce colostrum and it will be ready for your baby immediately after birth. So if you already feel like you have enough on your plate while you're preparing for your baby, don't feel like you're hurting your baby if you choose not to add colostrum harvesting to your list. But if collecting colostrum is part of your plan, hopefully this helps you feel empowered and prepared! For more tips, storage guidelines, step-by-step instructions with photos, and more, you can download my Harvesting Colostrum Cheatsheet for FREE by clicking the link below!