Known Donor vs Sperm Bank — How to Choose

For single women, lesbian couples, and others who need donor sperm to conceive, one of the earliest and most important decisions is whether to use a known donor (someone you personally know) or an anonymous/open-identity donor through a sperm bank.

Both options are used successfully by thousands of families each year. But they involve different medical requirements, legal processes, regulatory frameworks, and relational dynamics. Understanding these differences clearly is essential before choosing.

Pros and Cons Overview

The FDA 6-Month Quarantine Rule for Known Donors

This is the most commonly misunderstood aspect of known donor arrangements, and understanding it is essential.

What the Rule Says

Under FDA regulations (21 CFR Part 1271), reproductive tissue donors — including sperm donors — must be tested for a panel of infectious diseases. For anonymous donors at sperm banks, testing is performed at the time of donation and quarantine is built into the bank's process before release.

For known donors (directed donors, in FDA terminology), the FDA requires a 6-month quarantine period unless a specific exception applies. The process:

1. Known donor provides a semen sample at the start
2. Sample is cryopreserved and quarantined for 6 months
3. Donor is re-tested for HIV and hepatitis B and C at the 6-month mark
4. If re-testing is negative, the quarantined sample is released for use

The rationale: HIV and some other infections may not be detectable during the window period immediately after exposure. A 6-month interval allows window period infections to become detectable.

The Exception: Sexually Intimate Partners

The FDA's directed donor rules include an exception for sexually intimate partners — specifically, if the known donor is in a sexual relationship with the recipient, the physician can document this relationship and proceed without the 6-month quarantine, using a "directed reproductive use" designation with required risk acknowledgment counseling.

This exception is relevant for:

• Heterosexual couples using a known male partner's sperm (e.g., severe male factor, using a sample before chemotherapy, sperm banking before vasectomy reversal)
• Some couples where the donor is an established intimate partner

This exception does not apply in the vast majority of known donor arrangements for single women or lesbian couples, where the donor is a friend or acquaintance rather than a sexual partner.

Practical Implications of the 6-Month Wait

For a recipient eager to conceive, a 6-month wait is a significant imposition — both practically and emotionally. Many individuals and couples who initially plan to use a known donor ultimately choose a sperm bank once they fully understand this requirement.

Some recipients use banked anonymous/open-identity sperm during the quarantine period, planning to switch to the known donor's quarantined sample after 6 months. Others decide the bank route is simpler.

Legal Requirements for Known Donor Arrangements

This is the area with the highest risk for families who do not take adequate legal steps. Legal protections in known donor arrangements are not automatic.

Why a Legal Agreement Is Required

Without a written, executed legal agreement, the known donor could potentially assert parental rights — or be compelled to pay child support — depending on state law. In some states, courts have ordered men who donated sperm to known recipients to pay child support even when all parties believed no legal relationship existed.

The legal agreement must:

• Explicitly establish that the donor relinquishes all parental rights
• Establish that the recipient(s) are the sole legal parent(s)
• Address financial responsibility (donor has none)
• Address the child's right to information about the donor (and the family's approach to disclosure)
• Specify whether the donor is available for future donations (for sibling cycles)
• Specify whether there is any intended ongoing relationship between the donor and the child (Uncle John who the child knows as a family friend? A stranger who signed a contract?)

Both Parties Need Independent Legal Counsel

As with egg donation and surrogacy, both the donor and the recipient should have independent legal counsel review and execute the agreement. An agreement that appears to be a standardized form from the internet, reviewed by no one, is of limited enforceability.

State Law Variability

State laws on donor parental rights vary substantially. Some states (California, Washington, and others) have codified that a sperm donor who donates through a licensed physician has no parental rights by statute, regardless of whether a legal agreement exists. Other states do not have clear statutory protection and rely entirely on contract law.

The "through a licensed physician" provision is important in some states: in California, for example, the parental rights relinquishment under Family Code section 7613 applies when insemination is performed "under the supervision of a licensed physician and surgeon." Home insemination with a known donor in some states may not automatically carry the same parental relinquishment — making legal agreements even more important.

Genetic Testing Requirements for Known Donors

Sperm banks perform comprehensive genetic testing on all donors as part of their standard process. Known donors typically have not had this testing — and it must be arranged before proceeding.

Minimum Required Testing

At a minimum, known donors should undergo:

• FDA-required infectious disease panel (HIV, hepatitis B and C, HTLV, syphilis, CMV, gonorrhea, chlamydia)
• ABO blood type and Rh factor

Recommended Additional Testing (ASRM)

ASRM guidelines recommend that known donors undergo all the same screening as anonymous donors:

• Expanded genetic carrier panel (200+ conditions)
• Karyotype
• Semen analysis (concentration, motility, morphology)
• Complete physical examination
• Psychological evaluation

The recipient's physician typically coordinates this testing. Some reproductive endocrinologists and fertility clinics offer known donor evaluation packages.

Who Pays

Genetic testing costs for known donors are typically borne by the recipient(s). This is an additional cost that doesn't exist with banked donor sperm (testing is built into the vial price).

Considering Conception at Home?

If you are using a known donor or have quarantined banked sperm, at-home insemination is a common route — particularly for ICI-ready samples.

MakeAMom makes reusable at-home insemination kits for individuals and couples trying to conceive outside a clinic — including those using donor sperm. The CryoBaby kit is specifically designed for frozen sperm, which is the format most sperm banks ship in.

Explore home insemination kits at MakeAMom →

What Sperm Banks Offer That Known Donors Cannot

This is worth stating explicitly for anyone romanticizing the known donor route:

Comprehensive, Verified Medical History

Sperm bank donors complete detailed family history questionnaires covering at least three generations, reviewed by genetic counselors. A friend or relative who says "my family is healthy" is not a substitute for a structured, multi-generational pedigree.

Expanded Genetic Carrier Panel

Most major banks test donors on panels of 200-500+ genetic conditions. Many known donors have never had carrier screening. If you discover post-conception that your known donor is a carrier for the same condition you carry, you face difficult decisions.

Post-Thaw Quality Data

Banks track post-thaw motility and provide data on how their donors' samples perform after freezing. This matters because fertility success depends on motility after thaw, not just at collection.

IUI-Ready Preparation

Bank vials are available in IUI-washed format (ready for intrauterine insemination) and ICI format (appropriate for home insemination). Known donor fresh sperm must be processed by an andrology lab for IUI.

Long-Term Availability for Sibling Cycles

Banks maintain donor inventory, and recipients can typically purchase additional vials for future sibling pregnancies. A known donor may not be willing or available to donate again in 2-3 years.

Open-Identity Framework

Major banks provide open-identity donors who have agreed to identity release at the donor-conceived person's request at 18. A known donor arrangement requires explicit negotiation of what information the child will have and when — there is no standard framework.

Clinical IUI vs Home Insemination: The Route for Each Option

Known Donor + Clinical IUI

If using a known donor through a physician:

1. Donor produces a fresh sample at the clinic (or provides a quarantined frozen sample)
2. Sample is washed and prepared in the andrology lab (takes 1-2 hours)
3. IUI is performed by a nurse or physician
4. Timing is based on ovulation monitoring (LH surge, follicle ultrasound, or trigger shot)

Using a known donor's fresh (non-quarantined) sample in a clinical setting requires documentation of the sexually intimate partner exception or another legal/clinical pathway — your physician will guide this.

Known Donor + Home Insemination

Home insemination with a known donor's fresh sample is practiced by many individuals, and is not inherently medically dangerous to the recipient. However:

• The legal protections that apply to clinical insemination in some states (California's "through a licensed physician" provision) may not apply
• Fresh samples have variable quality and no pre-freeze quality data
• No IUI preparation is possible at home (home insemination requires ICI-format samples)

Sperm Bank + Clinical IUI

Purchasing IUI-ready vials from a sperm bank for clinical insemination is the cleanest clinical route: pre-washed, quality-verified, no quarantine wait, no legal ambiguity.

Sperm Bank + Home Insemination

Purchasing ICI vials from a sperm bank for home insemination is the simplest, most commonly used path for home insemination. ICI vials are shipped on dry ice; frozen sperm kits like those from MakeAMom are designed for exactly this use case.

Co-Parenting Implications: A Special Consideration

Some individuals or couples deliberately choose a known donor because they want the donor to have an ongoing role in the child's life — as a co-parent, godfather, or extended family member. This is a legitimate and growing family structure.

If co-parenting is the intent, the legal agreement must explicitly address:

• The level of involvement (visitation schedule, decision-making rights)
• Financial contribution expectations
• What happens if any party's circumstances change (the donor moves, the recipient enters a new relationship, custody disputes)
• The child's legal status relative to each party

Co-parenting is fundamentally different from donation. If you want co-parenting, you are not in a donation arrangement — you are creating a parenting partnership that requires a parenting agreement, not a donor agreement. A family law attorney, not just a reproductive attorney, should be involved.

If the intent is truly donation (donor has no parental role), the legal agreement should make this absolutely clear. "We want him to be involved as an uncle, but not a legal parent" is not a legally safe middle ground without very careful documentation.

Making the Decision: A Framework

Consider the following questions:

Medical:

• Has the known donor completed comprehensive genetic testing? If not, are you prepared for the time and cost to arrange it?
• Are you prepared for the 6-month quarantine, or is the known donor your sexually intimate partner (exception may apply)?

Legal:

• Are you prepared to execute a comprehensive legal agreement with independent counsel for both parties?
• Do you understand how your state's law treats known donor parental rights?
• Is co-parenting intended? If so, this requires a different type of agreement entirely.

Relational:

• If this is a friend or family member, have you discussed the full scope of what donation means, including that the donor has no parental rights?
• How will the relationship with the donor be navigated if complications arise?
• What will you tell your child about their origins, and is the donor aligned with this?

Practical:

• Are you willing to wait 6 months?
• Is the known donor willing and able to provide additional samples for a sibling cycle if needed?

If most of these questions create uncertainty or concern, a sperm bank is likely the cleaner path.

Key Takeaways

• Known donors require FDA 6-month quarantine unless the sexually intimate partner exception applies
• Legal agreements are required for known donors and should be executed with independent counsel for both parties
• Known donors should undergo the same genetic and infectious disease screening as bank donors
• Sperm banks offer comprehensive testing, IUI-ready vials, and long-term availability that known donors cannot match
• Home insemination is common with bank sperm (ICI vials); legal protections for home insemination with known donors vary by state
• Co-parenting intent requires a family law parenting agreement, not a donation agreement
• The decision depends heavily on your comfort with the medical, legal, and relational complexity of each path

For a comprehensive guide to sperm bank selection and donor profile evaluation, see Sperm Donor Selection Guide. For home insemination specifics for single women, see Home Insemination for Single Women.

Frequently Asked Questions

Q: What is the FDA 6-month quarantine rule for known donors? A: Under FDA regulations (21 CFR Part 1271), a known sperm donor's sample must be cryopreserved and quarantined for 6 months. After 6 months, the donor is re-tested for HIV, hepatitis B, and hepatitis C — if negative, the quarantined sample is released for use. This rule exists because some infections may not be detectable during the window period immediately after exposure. The exception applies only if the donor is a sexually intimate partner of the recipient.

Q: Do I need a legal agreement with a known donor? A: Yes — a written, executed legal agreement is essential. Without it, the known donor could potentially assert parental rights or be ordered to pay child support in some states. The agreement must explicitly establish that the donor relinquishes all parental rights, that the recipient(s) are the sole legal parent(s), and should address financial responsibility, the child's right to donor information, and future donation availability. Both parties should have independent legal counsel.

Q: What genetic testing should a known donor have? A: ASRM guidelines recommend that known donors undergo the same screening as anonymous bank donors: the FDA-required infectious disease panel (HIV, hepatitis B and C, HTLV, syphilis, CMV, gonorrhea, chlamydia), expanded genetic carrier panel (200+ conditions), karyotype, semen analysis, and a psychological evaluation. These tests are typically arranged through a fertility clinic and costs are borne by the recipient.

Q: Is home insemination with a known donor legally safe? A: This depends significantly on your state. In California, for example, parental rights relinquishment under Family Code section 7613 applies when insemination is performed "under the supervision of a licensed physician." Home insemination with a known donor in some states may not automatically carry the same parental protection — making a formal legal agreement even more critical. Consult a reproductive attorney in your state before proceeding.

Q: What advantages do sperm banks offer over known donors? A: Sperm banks offer comprehensive, professionally gathered multi-generational medical history; expanded carrier panels testing 200–500+ conditions; post-thaw quality data; IUI-ready washed preparations; long-term availability for sibling cycles; and a clear open-identity framework. A known donor typically lacks all of these unless testing is specifically arranged, and long-term availability depends entirely on the donor's willingness to continue donating.

This article is for informational purposes only and does not constitute legal or medical advice. State laws on donor parental rights vary significantly. Consult a reproductive attorney in your state before proceeding with any donor arrangement.