Pregnancy and Breastfeeding Blood Test

What is Pregnancy and Breastfeeding?

Pregnancy and breastfeeding are natural physiological states characterized by significant hormonal changes that support fetal development and milk production. These conditions are driven by elevated levels of prolactin, estrogen, and progesterone hormones. The Prolactin blood test is the most important test for monitoring hormonal balance during pregnancy and breastfeeding periods.

RECOMMENDED TEST Prolactin
What's included
Fast & easy, results by email & SMS
No extra fees paid at the lab
No need to visit a doctor
Private & confidential
No insurance needed
Results explained
Why Private MD Labs?
90-day money-back guarantee Lab order in minutes Save a trip to the doctor Low prices since 2005 Labs within 2 miles

What causes hormonal changes during pregnancy and breastfeeding?

Hormonal changes during pregnancy and breastfeeding are caused by the natural release of prolactin, estrogen, progesterone, and human chorionic gonadotropin (hCG) from the pituitary gland and placenta. During pregnancy, these hormones prepare your body for fetal development, and after childbirth, prolactin levels remain elevated to stimulate and maintain breast milk production. These hormonal shifts are essential biological processes that support both maternal health and infant nutrition throughout pregnancy and the breastfeeding period.

What is the best test for pregnancy and breastfeeding hormones?

The Prolactin blood test is the most important test for monitoring pregnancy and breastfeeding because it directly measures the hormone responsible for milk production and maintenance. Prolactin levels naturally increase during pregnancy to prepare the breasts for lactation and remain elevated throughout breastfeeding to ensure adequate milk supply. This test can detect abnormally high prolactin levels (hyperprolactinemia) that may occur outside of pregnancy or abnormally low levels that could indicate difficulties with milk production, helping healthcare providers identify hormonal imbalances that may require treatment.

When should I get tested for pregnancy and breastfeeding hormones?

You should get tested if you are experiencing difficulty producing breast milk despite frequent nursing, if you have symptoms of high prolactin levels outside of pregnancy such as irregular periods or unexpected milk production, if you suspect you might be pregnant and want hormonal confirmation, or if you have concerns about hormonal imbalances affecting your fertility or breastfeeding capacity. Testing is particularly important if you are breastfeeding and experiencing unexplained changes in milk supply or if you have persistent galactorrhea (milk production) when you are not pregnant or nursing.

What are the symptoms of hormonal imbalances during pregnancy and breastfeeding?
Symptoms of hormonal imbalances during pregnancy and breastfeeding include difficulty producing adequate breast milk, unexpected milk leakage when not pregnant or breastfeeding, irregular or absent menstrual periods, unusual fatigue or mood changes, breast tenderness or swelling, and difficulty conceiving. During pregnancy, you might notice excessive nausea, extreme fatigue, or unusual weight changes. While breastfeeding, low milk supply, painful engorgement, or premature cessation of milk production can indicate hormonal problems that may benefit from evaluation and testing.
Who is at risk for hormonal complications during pregnancy and breastfeeding?
Women with pre-existing thyroid disorders, polycystic ovary syndrome (PCOS), pituitary gland tumors, or previous hormonal imbalances are at higher risk for complications. First-time mothers, women with a history of difficulty breastfeeding, those taking certain medications that affect hormone levels, and women with high stress levels or inadequate nutrition may also experience hormonal challenges. Additionally, women who have had breast surgery, those with diabetes, and mothers of multiples (twins, triplets) face increased risk of hormonal imbalances affecting milk production and pregnancy health.
What happens if hormonal imbalances during pregnancy and breastfeeding are left untreated?
Untreated hormonal imbalances during pregnancy can lead to complications such as gestational diabetes, preeclampsia, premature birth, or poor fetal development. During breastfeeding, untreated low prolactin levels can result in inadequate milk supply, leading to infant malnutrition and failure to thrive. High prolactin levels outside of pregnancy can cause infertility, irregular menstrual cycles, and ongoing unwanted milk production. Chronic hormonal imbalances may also contribute to postpartum depression, bone density loss, and long-term reproductive health issues that affect your ability to conceive in the future.
Can pregnancy and breastfeeding hormones be diagnosed with a blood test?
Yes, pregnancy and breastfeeding hormones can be effectively diagnosed with blood tests. The Prolactin blood test measures the hormone responsible for milk production and can identify both elevated and deficient levels. Blood tests for human chorionic gonadotropin (hCG) confirm pregnancy, while estrogen and progesterone tests assess overall hormonal balance. These tests provide accurate, quantitative measurements of hormone levels, allowing healthcare providers to monitor normal physiological changes during pregnancy and breastfeeding or detect abnormalities that may require medical intervention.
How are hormonal imbalances during pregnancy and breastfeeding treated?
Treatment for hormonal imbalances depends on the specific hormone affected and the underlying cause. For low prolactin levels affecting breastfeeding, lactation consultants may recommend more frequent nursing, breast pumping, and dietary changes to support milk production. High prolactin levels caused by pituitary tumors may be treated with medications like cabergoline or bromocriptine to reduce hormone production. Thyroid hormone replacement may be prescribed for thyroid-related imbalances, while lifestyle modifications including stress reduction, adequate sleep, proper nutrition, and hydration support overall hormonal health during pregnancy and breastfeeding.
How can I prevent hormonal complications during pregnancy and breastfeeding?
You can prevent hormonal complications by maintaining a balanced diet rich in protein, healthy fats, and essential vitamins, staying well-hydrated, getting adequate rest, and managing stress through relaxation techniques. Regular prenatal care with hormone monitoring helps detect imbalances early. Establishing a consistent breastfeeding routine with proper latching technique supports normal prolactin levels and milk production. Avoiding unnecessary medications that interfere with hormones, limiting caffeine and alcohol, and seeking early support from lactation consultants when experiencing breastfeeding difficulties can help maintain hormonal balance throughout pregnancy and the postpartum period.
What natural remedies help support hormonal balance during pregnancy and breastfeeding?
Natural remedies that support hormonal balance include consuming galactagogue foods like oatmeal, fennel, fenugreek, and brewer's yeast to boost milk production. Staying hydrated by drinking plenty of water throughout the day helps maintain adequate milk supply. Skin-to-skin contact with your baby immediately after birth and during feedings naturally stimulates prolactin release. Gentle exercise like walking and prenatal yoga helps regulate hormones and reduce stress. Herbal teas such as red raspberry leaf and nettle may support hormonal health, though you should always consult your healthcare provider before using herbal supplements during pregnancy or while breastfeeding.
How’s this work?
Getting your blood test with us is easy, private & backed by the power of science.

Long story short:
  1. In the test options, use the filters or search box to narrow your choices and find the test you want.
  2. If you need a hand navigating through options, text our super friendly support team at 754-799-7833, and we'll provide tailored suggestions to help you find the ideal test.
  3. Once your order is placed, we’ll create your doctor’s lab order remotely, without any need for you to make a trip to a doctor in person or to talk to the doctor. Expect to receive your doctor’s lab order right in your inbox. It will also be in your patient portal if you need to find it later. We’ll also include instructions regarding fasting and other requirements for your test. Your patient portal will be auto-created hassle-free during checkout.
  4. If this is your first time ordering, you'll be prompted to create a password for instant login access to your patient portal. It's a quick way to conveniently access your orders and results whenever you want.
  5. When you’re ready, visit one of our 4,000 locations. Just bring your ID – no printing or faxing of your lab order is needed, as your order and details will already be in the lab system.
  6. Note that most lab locations don’t accept walk-ins, so it’s best to book an appointment in advance. Don’t worry – we’ll provide detailed instructions along the way.
  7. You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy!
  8. If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com and we'll gladly help you.
How do I know which test to get?
In the test options, find the test you want. If you’re not sure which test to get, we can lend a hand in finding the right option.

Just text or call us at 754-799-7833, email us at support@privatemdlabs.com, and we'll gladly help you. We've got your back and reply quickly.
Is it possible to make changes to my lab order if I made a mistake with the name, date of birth, or any other details?
Absolutely! We totally understand that errors can happen. No worries, we're here to help you.

Just reach out to us via text at 754-799-7833 or shoot us an email at support@privatemdlabs.com. Remember to include your order number and let us know the correct information you’d like to update. Our awesome team will jump right in and make sure everything is sorted out and accurate for you.

There are no changes necessary if your address is wrong on the requisition though. We don’t mail anything out.

Our lab requires an address to be listed to generate an order.
Do you accept health insurance?
Only HSA & FSA is accepted.

Our services are strictly self-pay and cannot be submitted to your health insurance provider except for Health Savings Accounts or Flexible Savings Accounts.

This policy applies to all insurance companies, including federal health insurance programs like Medicare.

If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com.
Can I cancel my order?
Yes.

We get it – sometimes your needs change.

As long as your samples haven’t been collected yet, we’re happy to help you cancel your order.

If you have any further questions, please text us at 754-799-7833 or email support@privatemdlabs.com.

You can read more about our cancellation policy here.
How can I find a lab location near me?
During the ordering process, you’ll be able to select a specific lab near you, with no strings attached! You can switch it up later easily and visit any of our authorized locations as long as it’s the same lab company you selected your test for (Quest Diagnostics or Labcorp).

Before you proceed with your order, feel free to browse through all our lab locations here. This will give you the peace of mind of knowing that there's a lab nearby your home, office or your favorite gym.

If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com and we'll gladly help you.
Here’s how easy it is to get blood work done on your terms
Choose a checkup
Order your test Save a trip to the doctor. Your results will come with clear, friendly explanations. Takes 2 minutes
Book a lab
Book an appointment Visit any of our 4,000 nearby lab locations to have your samples collected. Book or walk-in
Choose a checkup
Get results Receive a clear, easy-to-digest health report by email & SMS within a few business days. Get answers, fast

Here’s why 1,000,000+ customers chose us for affordable hassle-free private blood testing.

You get clinical lab reports & simplified health insights.
Save time & gas, go straight to the lab. Our doctors cover the rest.
Results start landing the next day after your lab visit.*
We don’t sell or share your data. Your time & privacy matter.
US-licensed doctors have your back if things get unclear.
No hidden fees, nice discounts for regular checkups.
Save a trip to the doctor, go directly to the lab
Instant orders, results often overnight*
Results explained in simple language
Reviewed by US licensed doctors
Fast & confidential, we never sell or share your data
No insurance needed, transparent pricing
Demo results
Testosterone 375 ng/dL
Demo results
Normal Optimal 400 - 1000 High
375 ng/dL

What this means

Your testosterone levels are slightly below the optimal range. While this is not necessarily cause for concern, it may contribute to occasional fatigue, reduced motivation, or lower muscle mass over time.

* Regular blood test results (e.g., CBC) typically start arriving the next business day after sample collection. More complex tests, such as hormone panels, may take up to 10–15 business days due to their complexity.

Us vs. Them

Not overhyped or overpriced. Just comprehensive blood testing made simple and for everyone.

* Regular blood test results (e.g., CBC) typically start arriving the next business day after sample collection. More complex tests, such as hormone panels, may take up to 10–15 business days due to their complexity.

1,000,000+ blood tests later, here's what our customers say

Google reviews 505 reviews Next
Prolactin
What's included
Fast & easy, results by email & SMS
No need to visit a doctor
Private & confidential
No insurance needed
Results explained
No extra fees paid at the lab

Sample results

Sample image
For you & your coach Health insights Written in human language, backed by science.
Sample image
For you & your doc Classic lab report A familiar and comprehensive lab report.

Ask AI

Your 24/7 Lab Guide

Quick questions:

Which test is right for my symptoms?
What could be causing this?
When should I get tested?
A
Hi, I'm AI. I can help you find the right test, explain results, or prepare for your visit. What can I help with?
Just now
A
AI provides insights, not medical diagnoses.