IVF for HIV-Serodiscordant Couples: The Sperm Washing Pathway

For couples where one partner lives with HIV and the other doesn't, building a biological family has been a solved problem for over two decades. The pathway combines sperm washing (for HIV-positive male partners) with either IUI or IVF to achieve pregnancy while protecting the HIV-negative partner and the resulting child.

The technology is well-established. The remaining barriers are more about access to specialized fertility care, education, and — for many couples — finding a program willing to treat them.

The Core Concept

HIV lives in seminal plasma and in white blood cells found in semen, but not in sperm cells themselves. Sperm cells lack the CD4 receptors that HIV uses to enter cells.

Sperm washing techniques separate sperm from seminal fluid and white blood cells, isolating only sperm — theoretically HIV-free.

The wash technique

1. Semen sample collected
2. Density-gradient centrifugation separates sperm from other components
3. Post-swim-up isolates motile sperm
4. Sample is PCR-tested for HIV RNA
5. If negative, sample is used for insemination or ICSI

Modern PCR testing can detect very low viral loads. When the washed sample tests negative, transmission risk approaches zero.

What the Safety Data Shows

Sperm washing for HIV-serodiscordant couples has been performed globally since the 1990s. The largest safety registries include the CREAThE (European) and various national programs.

Rough summary of accumulated data:

• Thousands of documented pregnancies through washed-sperm IUI and IVF
• Zero HIV transmissions to female partners in the largest series using modern testing protocols
• Zero HIV transmissions to children born from these pregnancies

This safety record is dramatically better than unprotected intercourse with an HIV-positive partner, even when that partner has an undetectable viral load. Sperm washing plus assisted reproduction is the recommended approach for serodiscordant couples pursuing biological pregnancy.

Modern Framing: U=U and Sperm Washing

Modern evidence has established that people with HIV on effective antiretroviral therapy who maintain undetectable viral load do not transmit HIV sexually (the "U=U" — Undetectable = Untransmittable — consensus, endorsed by CDC, WHO, and BHIVA among others).

This has changed the conversation. For serodiscordant couples where the HIV-positive partner has stably undetectable viral load, natural conception during peak fertility windows with PrEP for the negative partner is another reasonable option.

Sperm washing plus IVF remains preferred when:

• The couple has independent infertility (advanced age, tubal factor, male-factor beyond HIV)
• The HIV-positive partner's viral load is not reliably suppressed
• The couple prefers the highest-certainty safety pathway
• The couple wants to time pregnancy precisely rather than depend on natural fertility windows

Female Partner HIV-Positive

When the HIV-positive partner is the female, sperm washing isn't needed for HIV protection. Standard IVF or ICSI proceeds. Key considerations:

• Optimal viral load control before pregnancy
• Coordination with HIV care team throughout pregnancy
• Antiretroviral therapy through pregnancy to prevent perinatal transmission (with the right regimen, transmission risk drops below 1%)
• Delivery planning based on viral load
• Postnatal newborn prophylaxis and infant HIV testing

Colombia's Approach

Colombia's major fertility centers can perform sperm washing IVF for serodiscordant couples. Access varies by clinic — some programs have integrated infectious disease and reproductive endocrinology teams; others do not offer the service directly and would refer.

Practical considerations:

• Verify the clinic's experience — ask how many serodiscordant couples they've treated and their safety record
• Confirm PCR testing protocol — should test each washed sample before use
• Bring documentation — viral load history, medication regimen, recent labs, US care records
• Cost — sperm washing adds US$300–$700 per cycle typically; total IVF costs remain the same as standard IVF otherwise

The Practical Pathway

1. Consultation with a reproductive endocrinologist experienced in serodiscordant care
2. Coordination with the HIV-positive partner's infectious disease physician
3. Standard IVF workup for both partners
4. Stimulation and retrieval as usual
5. Sperm collection, washing, and PCR testing on the day of retrieval
6. ICSI (single-sperm injection) into each retrieved egg — often preferred over conventional insemination for maximum safety
7. Embryo transfer as usual