Embryo freezing uses in vitro fertilization to create embryos and vitrification to freeze them for future use. It is a technique to preserve fertility when eggs are younger for a future pregnancy.


eggvsembryo (1)

Our blog

Women in Medicine Month: Dr. Bat-Sheva Lerner Maslow

“I love giving women the power and control to know more about their biology, so it isn’t some locked secret that they can’t access.”

Read more

Our blog

Welcome to the new Extend Fertility

As the industry leader in egg freezing, we’re very excited to announce the expansion of our service offerings to include the full spectrum of treatments for infertility, including in vitro fertilization (IVF). Plus, our new website and modern brand creative bring to life our mission: “Fearlessly take on your fertility.” “We have frozen over 27,000 […]

Read more

Our blog

Ask the doctor: Will egg freezing affect my natural fertility?

You asked: If I freeze my eggs—which includes removing some eggs from my ovaries—does that reduce my ovarian reserve? Will it affect my natural fertility? Dr. Maslow answers: Short answer: no, egg freezing won’t lower your ovarian reserve and won’t decrease your chances of getting pregnancy naturally in the future. To understand why, let’s quickly […]

Read more


This process requires coordination with a partner (or sperm donor) and looks something like this:


Fertility assessment

(30–45 minutes)

A simple blood test of your anti-Mullerian hormone (AMH) and a transvaginal ultrasound provide our doctors with an understanding of your fertility.


MD consultation

(Up to 1 hour)

In a 1x1 meeting with one of our doctors, we discuss your medical history and the results of your fertility assessment, and review the science, the process, and personalized expectations of embryo freezing, including recommendations for pre-screening for partner (male checklist, infectious diseases) and genetic screening for the couple.



(Up to 2 hours)

When you’re ready to move forward, we will teach you everything you need to know for a successful cycle, including how to administer prescribed hormone injections.



(8–12 days)

You will administer daily hormone injections to stimulate the ovaries. We monitor your progress approximately every other day in short, 20–30-minute visits.


Retrieval day and
sperm preparation

During a 15-minute surgical procedure, your doctor will remove follicular fluid, containing eggs, from your ovaries. You’ll be under mild sedation, so it won’t hurt. It’s done by needle through your vaginal wall—no cuts or stitches. Most people return to work the next day. The sperm from the male patient or a sperm donor is prepared through a process called “sperm washing” which isolates healthy sperm from the remainder of the seminal fluid in order to improve chances of fertilization.


Fertilization and incubation

Eggs are fertilized to create one or more embryo(s). In some cases, the doctors may recommend a procedure called intracytoplasmic sperm injection (or ICSI) in which a single sperm is injected directly into the eggs. The embryos are then incubated in a specialized environment in the lab for 5–6 days, during which the embryologists monitor and support them to ensure they are developing properly.


Vitrification and storage

Your embryos are frozen in liquid nitrogen in our lab by our team of experienced embryologists. Your embryos are stored on-site before being transferred to our secure storage facility. When you are ready to use these embryos, we will thaw and transfer them to your uterus.

Our state-of-the-art lab generates superior results. Our embryo thaw rate is nearly 100%.

About our approach


Affordable and transparent

Fertility assessment and consultation
Initial consultation may include bloodwork, the cost of which is subject to the patient’s insurance
1st cycle
Includes stimulation monitoring, retrieval, anesthesia, fertilization and vitrification in the lab
Subsequent cycles
We make it easier to reach your goals by offering an even lower price for additional cycles after your first
Included 1-10 eggs
$1,000 11-20 eggs
$2,000 21+ eggs
Biopsy for PGS/PGD
$300 per embryo 1-10 embryos
$3,000 10+ embryos
~$225 per embryo Genetics lab fee
Additional fees
$3,000–6,000 Medication
(paid to pharmacy, may be covered by insurance)
$600 per year Storage
(discounts available for 5 and 10 year plans)


We offer 1, 5 and 10 year storage plans.


Reduce the upfront costs of treatment with financing through our lending partners.


Extend Fertility is in-network with Progyny and WIN Fertility.

Ready to learn more about embryo freezing? Speak with one of our fertility advisors.

Let's talk