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Prenatal Colostrum Harvesting: A Step-by-Step Guide for Expecting Parents

  • Writer: Jennifer Gerard, APRN, FNP, IBCLC
    Jennifer Gerard, APRN, FNP, IBCLC
  • 5 days ago
  • 3 min read

Written by Jennifer Gerard, APRN, FNP, IBCLC | Medically Reviewed

Introduction


Prenatal colostrum harvesting, or antenatal expressing, is the practice of collecting your baby’s first milk—colostrum—before birth. Colostrum is rich in antibodies, nutrients, and growth factors, making it crucial for your newborn’s immune system and early nutrition.

Harvesting colostrum before birth is especially helpful for parents expecting premature infants, babies at risk for hypoglycemia, or those concerned about early breastfeeding challenges.


Why Harvest Colostrum Before Birth?


Benefits of prenatal colostrum collection include:

  • Supports Newborn Immunity: Colostrum contains IgA antibodies, lactoferrin, and other protective proteins.

  • Provides Early Nutrition: Ready supply for babies who may struggle with latching or have low blood sugar.

  • Boosts Parent Confidence: Helps parents feel prepared for breastfeeding.

  • Reduces Formula Use: Offers an immediate alternative if supplementation is needed.


Safety Guidelines for Prenatal Colostrum Harvesting


Prenatal expressing is safe for most healthy pregnancies but should be done with caution:


  • Gestational Age: Only begin after 36–37 weeks.

  • High-Risk Pregnancies: Avoid antenatal expressing without medical clearance if you have placenta previa, preeclampsia, or history of preterm labor.

  • Technique: Hand expression is preferred over pumps to reduce stimulation.

  • Stop Immediately If: Contractions, bleeding, or fluid leakage occurs.

Always consult your OB provider or IBCLC before starting antenatal expressing.

Step-by-Step Guide to Prenatal Colostrum Harvesting

Step

Instructions

Tips

1

Wash hands thoroughly and prepare sterile syringes or small containers

Cleanliness reduces contamination risk

2

Massage the breast very gently to stimulate colostrum flow

Circular motions around the areola work best

3

Compress the areola toward chest wall

Avoid pulling or compressing on the nipple

4

Collect colostrum drops in syringe or container

0.5–1 mL per syringe is ideal

5

Store properly

Refrigerate up to 48 hours, or freeze for long-term use

6

Frequency

1–2 times per day; avoid overexpressing

Note: Most parents collect small amounts, but even tiny drops are highly beneficial for newborns.

Who Should Consider Prenatal Colostrum Harvesting?


  • Parents expecting premature or medically fragile infants

  • Those with a history of breastfeeding challenges

  • Babies at risk for hypoglycemia or early supplementation


Tip: Consult your healthcare provider to ensure safety, especially if you have a high-risk pregnancy.

FAQs About Prenatal Colostrum Harvesting


When can I start harvesting colostrum?

Most guidelines recommend waiting until after 36 weeks of gestation.


Can expressing cause labor?

In low-risk pregnancies, hand expression is generally safe. Stop if contractions, bleeding, or fluid leakage occur and notify your health care provider.


How much colostrum can I collect?

It is normal to collect very small amounts (a few milliliters), which is enough for early supplementation.


How should I store prenatal colostrum?

Refrigerate up to 48 hours or freeze in small syringes (0.5–1 mL) for later use.


Who should avoid antenatal expressing?

People with high-risk pregnancies, experiencing signs of preterm labor, bleeding and other concerns should avoid prenatal expression unless cleared by a healthcare provider.


This content is for educational purposes and does not replace individualized medical advice, diagnosis, or treatment. For personalized care, consult a qualified healthcare provider or lactation specialist. This article is supported by evidence-based clinical guidelines and medical literature. Additional references are available on our Resources page.

Key Takeaways

  • Prenatal colostrum harvesting is safe and effective for most healthy pregnancies.

  • If you are a candidate for hand expression, it is recommended to wait until after 36 weeks to start.

  • Colostrum provides nutrition and immunity support for newborns.

  • Guidance from an OB provider or IBCLC is essential.

References


  1. Forster DA, et al. Antenatal expressing for women at risk of breastfeeding difficulties. Cochrane Database Syst Rev. 2020.

  2. Dungy CI, et al. Prenatal colostrum harvesting: Technique and outcomes. J Hum Lact. 2018;34(2):273–282.

  3. Academy of Breastfeeding Medicine Protocol #8: Use of expressed human milk and donor milk. 2021.

  4. Baby-Friendly Hospital Initiative. Guidelines for Antenatal Expressing. WHO/UNICEF, 2020.


Considering prenatal colostrum expression but not sure it's right for you? Let's talk about it! I offer holistic lactation consults and Breastfeeding Medicine virtual visits that combine evidence-based care with individualized support.


Jennifer Gerard, APRN, FNP, IBCLC, PMH-C


Jennifer Gerard, FNP, IBCLC is a Family Nurse Practitioner and International Board Certified Lactation Consultant specializing in breastfeeding medicine and complex lactation care through virtual consultations.

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