BANK POLICY COMPARISON · REVIEWED OCTOBER 6, 2026
It may mean families, births, reported outcomes, or purchase slots—and it may apply nationally or worldwide. Compare the definition and tracking method before comparing the number.
Scope: This page compares published bank-policy language. It does not estimate the true number of donor-conceived siblings, recommend a donor, or provide medical, genetic, or legal advice.
Current bank policies illustrate why a headline number is incomplete: The Sperm Bank of California publishes a ten-family worldwide limit; Seattle describes a 25-family nationwide limit and family-slot controls; California Cryobank describes a maximum goal of 25–30 family units worldwide. Those are different definitions, not a single ranking.
A number is not comparable until you know its unit and geography.
Ask whether the limit counts families, reported pregnancies, live births, children, purchasers, or family slots.
Ask whether the limit applies worldwide, nationwide, or within a geographic area.
Confirm whether multiple children born to one recipient family still count as one family.
Write the bank's exact wording into your comparison instead of shortening it to “family limit.”
Different controls can produce different levels of certainty and different timing.
Some programs allocate purchase slots; others rely on pregnancy and birth reports from recipients or clinics.
Ask when a donor stops being available to new families: at purchase, pregnancy, reported birth, or another event.
Ask how stored vials or embryos, late reports, international distribution, and sibling-only inventory are handled.
Request the current written policy and the contact that can explain donor-specific status.
A place under a limit does not necessarily reserve usable vials now or later.
Confirm whether a family slot includes a vial purchase, only preserves purchase eligibility, or does something else.
Ask whether the bank guarantees future vial releases; published policies may explicitly say it does not.
Treat sibling inventory as a separate decision involving current availability, storage, clinic acceptance, and bank terms.
Do not treat a family-limit label as a promise of pregnancy, future inventory, or an exact donor-sibling count.
A short comparison record prevents three different policies from looking like one interchangeable number.
Unit: families, family units, births, pregnancies, or slots.
Geography: worldwide, United States, or another distribution area.
Control point: purchase allocation, self-reporting, audit, or a combination.
Exceptions and uncertainty: siblings, stored material, late reporting, international use, private donation, and future policy changes.
THREE CURRENT EXAMPLES
Ten families worldwide; siblings can mean more than ten children. Its consent form also describes reporting and stored-material factors that can affect the result.
SeattleTwenty-five families nationwide for its standard program; family slots track participating families, but do not guarantee future vial releases.
A maximum goal of 25–30 family units worldwide, according to its published FAQ.
Policies can change. Verify the live policy and donor-specific status before making a purchase decision.
PRIMARY SOURCES · REVIEWED OCTOBER 6, 2026
These sources show the unit, geography, tracking method, and stated limitations behind each example. Ask the bank to confirm the current policy for the donor and distribution channel you are considering. For a broader review, use our 16-question sperm bank checklist.
IF A NARROW FAMILY LIMIT IS BLOCKING YOUR SEARCH
If you have already checked several banks, tell us which sources you searched, the non-sensitive limit you need, and your timeline. We will explain which approved, accessible sources a 90-day search could monitor before you pay. No guaranteed match or family count.