Many men don’t think about their fertility until something threatens it: a cancer diagnosis, a plan to start testosterone, a vasectomy, or a semen analysis that comes back lower than expected. Sperm banking (sperm cryopreservation) is one of the simplest and most reliable ways to protect your ability to have biological children later. Freezing sperm before a risk shows up gives you options you might not otherwise have.
At Maze Labs, we provide physician-directed sperm banking for men in New York City, Westchester, Connecticut, and New Jersey. Below we cover who should think about banking, why timing matters so much with cancer treatment, and what the process looks like in our own in-house lab.
Who Should Consider Banking Sperm?
Sperm banking is worth considering any time something in your future could reduce sperm production, damage sperm, or make ejaculation difficult. The most common reasons include:
Cancer treatment (chemotherapy, radiation, or surgery). This is the most urgent reason to bank. Leading medical societies recommend that every man facing cancer treatment be offered sperm banking before treatment begins.
Starting testosterone replacement therapy (TRT). Testosterone from outside the body shuts down the signals that tell the testicles to make sperm. Many men on TRT see sperm counts drop sharply, sometimes to zero. Production often comes back after stopping, but recovery can take months or years and isn’t guaranteed. If you’re unsure about future children, banking before you start is a smart safeguard.
Gender-affirming hormone therapy. Hormone treatment can significantly reduce or stop sperm production. Banking beforehand keeps the option of biological parenthood open.
Planning a vasectomy. Vasectomy is meant to be permanent. Reversal and sperm retrieval are possible but don’t always work and can be costly. Banking a few samples first is an easy insurance policy, especially for younger men or men without children yet.
Low or declining sperm counts. If your semen analysis shows low counts or poor motility, freezing sperm now can preserve what you have before it potentially declines further.
Age. Sperm quality changes over time. Men who expect to delay fatherhood may choose to bank while they’re younger.
Upcoming IUI or IVF. Having frozen backup samples can reduce stress on the day of a procedure, help if you’ll be traveling or unavailable, and provide a safety net if a fresh sample is difficult to produce.
Other medical or surgical risks. Surgery that could affect ejaculation, medications that are toxic to the testicles, or conditions that put sperm production at risk are all reasons to talk with us.
Cancer Treatment: Why You Should Bank Before You Start
If you’ve just been diagnosed with cancer, fertility probably isn’t the first thing on your mind. But timing matters a lot, and a short visit before treatment can make a big difference later.
Chemotherapy and radiation can damage sperm production. Some treatments, especially alkylating chemotherapy drugs (like cyclophosphamide), platinum drugs (like cisplatin), radiation near the testicles, and stem cell transplants, can cause long-term or even permanent loss of sperm production.
Sperm collected after treatment starts may carry genetic damage. Even one round of treatment can harm the quality and DNA of sperm. For this reason, experts strongly recommend collecting sperm before the first treatment. Many programs don’t freeze sperm once cancer treatment has started, and those that do treat it as a last resort.
Banking before surgery matters too. Men with suspected testicular cancer should be offered sperm banking before the testicle is removed, when possible.
Don’t let a tight timeline stop you. We know oncologists often want to start treatment quickly. Ideally, men bank several samples, but even one sample is worth freezing. Modern IVF with ICSI (injecting a single sperm into an egg) means even a small number of sperm can lead to a pregnancy. Low counts at diagnosis also shouldn’t discourage you, since cancer itself can lower sperm quality before any treatment begins.
If you or a loved one is facing cancer treatment, call us right away. We prioritize oncology patients so banking can happen before treatment starts.
Can I Donate My Sperm at Maze Labs?
This is one of the most common questions we hear. Maze Labs does not offer sperm donation. Our cryobanking program is for men preserving their own sperm for their own future use with a partner or with their fertility team.
If you want to become a sperm donor, you’ll need to contact a dedicated donor sperm bank. Those programs do the extensive donor screening, infectious disease testing, and matching that donation requires.
What the Sperm Banking Process Looks Like at Maze
One of the things that sets Maze Labs apart is that we have our own in-house andrology laboratory. Your samples are collected, analyzed, processed, frozen, and stored under one roof, with physician oversight at every step, so they never have to be shipped to an outside facility.
1. Consultation and planning. Under the leadership of Michael A. Werner, MD, we review your medical situation, timeline, and goals. We coordinate with your oncologist, endocrinologist, urologist, or fertility clinic and build a clear cryobanking plan, including how many samples to aim for.
2. Collection. Samples are usually produced by masturbation in a private collection room at our facility. [Add Maze-specific details: abstinence instructions, scheduling, at-home collection policy, if applicable.]
3. Semen analysis. Our lab checks each sample for sperm count, motility (movement), and other key measures. This tells us how much usable sperm is available and helps plan how it can be used later (for example, IUI versus IVF).
4. Processing and freezing. The sample is mixed with a protective freezing solution and cooled in a controlled way to minimize damage from ice crystals, then stored in liquid nitrogen. We divide samples into multiple vials so they can be used for more than one future treatment attempt.
5. Help with very low counts. For men with very few sperm, our lab offers advanced sperm search and specialized freezing techniques designed to find and preserve even small numbers of motile sperm. When sperm can’t be obtained by ejaculation, we can discuss other options, including surgical sperm retrieval.
6. Long-term storage and future use. Your samples are securely stored in monitored tanks. When you’re ready, we coordinate thawing and transfer with your fertility team for IUI or IVF.
How Many Samples Should I Bank?
More samples give you more flexibility. IUI needs higher numbers of moving sperm, while IVF with ICSI needs very few. Many fertility specialists suggest about three samples when time allows, but we tailor the plan to your situation. When time is short, any sample we can freeze still offers a real chance at biological fatherhood.
Protect Your Options
Sperm banking is quick and noninvasive, and it can preserve your chance to have biological children no matter what the future holds. If you’re facing cancer treatment, thinking about TRT or gender-affirming hormones, planning a vasectomy, or simply want peace of mind, Maze Labs offers expert-led fertility preservation with safety, precision, and long-term planning.
Contact Maze Labs today to schedule a sperm banking consultation in NYC or Westchester.
