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Sperm Aspiration & Retrieval


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Sperm retrieval is reserved for the most severe cases of male infertility. The most common reason for sperm retrieval is when men have no sperm in their ejaculate (azoospermia). This can be due to a blockage in the plumbing (ex. Vasectomy) when the “sperm factory” or testicle is producing healthy amounts of sperm. This is “Obstructive Azoospermia.” The other situation is when the plumbing is wide open but sperm production is not occurring properly. This is “Non-Obstructive Azoospermia.” The success rates of sperm retrieval mostly depend on how well sperm are being produced.

Sperm Retrieval with ICSI, not IUI

Sperm retrieval with Intracytoplasmic Sperm Injection (the most commonly used form of In Vitro Fertilization) may be the treatment of choice or the only treatment available to certain couples. It is important to clarify that sperm retrieval is not used in conjunction with Intrauterine Inseminations (IUI). Sperm retrieval does not yield the millions of sperm that are needed for an IUI. Sperm retrieval focuses on getting enough sperm so that a single sperm can be chosen to be injected into a single egg to make an embryo.

What Types of Sperm Retrieval Are There?

A quick review of a man’s anatomy reminds us that behind the testicle (“sperm factory”) is the epididymis. This structure acts as a “refinery” where last minute touch-ups and adjustments are made to the sperm. Sperm can be retrieved from either the testicle or the epididymis depending on his reproductive capacity.

There are five main ways of retrieving sperm that each have their own peculiar acronyms:

    1. MESA: MicroEpididymal Sperm Aspiration
    2. PESA: Percutaneous Epididymal Sperm Aspiration
    3. TESA: Testicular Sperm Aspiration
    4. TESE: Testicular Sperm Extraction
    5. Micro-TESE: Microsurgical Testicular Sperm Extraction

An aspiration is when tiny catheters are used to gently “suck” up sperm when they are in in the pipes of the epididymis or back in the testicular sperm factory. An extraction is when a small incision is make in the scrotum. A window is then opened over the testicle so that tiny pieces of sperm-producing tissue can be retrieved (each is the size of kernel of rice).

Which Option is Best for Us?

Having so many options is great because “one size does not fit all.” A comprehensive male fertility evaluation and a careful discussion with you and your partner will determine which option is the safest and the most efficient way to locate and retrieve sperm for you. Each option has its advantages and disadvantages:


As you can see, a lot of factors go into choosing the best option. At the Southwest Fertility Center for Men specializes in offering you all of these options. This is made possible by Dr. Kuang’s microsurgical expertise that opens up all these options for you.

Click here for after a vasectomy
Click here for ivf or icsi
Click here for azoospermia no sperm

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