The Complete Male Fertility Workup, the Half That Often Gets Skipped

Why Both Partners Are Evaluated at the Same Time

A male fertility workup is not a second step taken only if the female evaluation comes back clear. Guidelines direct clinicians to begin evaluating both partners at the same time, because a problem on the male side is common, is frequently the sole or a contributing cause, and is easy to miss if no one looks 1Ref 1American Urological Association / American Society for Reproductive Medicine (2020).Diagnosis and treatment of infertility in men: AUA/ASRM guideline part I.That evaluation of both partners should begin concurrently, that semen analysis is the starting test, and that male infertility can be a presenting sign of serious underlying conditions such as testicular cancer, a pituitary tumor, or hypogonadism — so the male partner must be worked up in parallel and hormone testing is added when indicated.. The couple, not one person, is the unit of the workup.

The timing for starting the evaluation follows the same rule for both partners. A couple is generally advised to seek assessment after twelve months of trying, or after six months if the female partner is 35 or older 2Ref 2Practice Committee of ASRM (2023).Definition of infertility: a committee opinion.The recommendation to begin evaluation after 12 months of trying when the female partner is under 35, and after 6 months when she is 35 or older.. The male side of that assessment mirrors the female fertility workup in structure — a history, an exam, and targeted tests — and the two proceed in parallel so that a treatable male factor is not discovered a year late.

The practical reason is efficiency and fairness. A semen analysis is quick, non-invasive, and inexpensive relative to much of the female evaluation, so there is rarely a reason to defer it. Starting it early can spare a couple months of testing aimed at the wrong partner.

There is no real downside to beginning the male evaluation early and a genuine cost to skipping it. A semen analysis is one of the cheapest and fastest tests in the whole workup, and a clearly abnormal result can reorient a couple's entire plan in a single visit 1Ref 1American Urological Association / American Society for Reproductive Medicine (2020).Diagnosis and treatment of infertility in men: AUA/ASRM guideline part I.That evaluation of both partners should begin concurrently, that semen analysis is the starting test, and that male infertility can be a presenting sign of serious underlying conditions such as testicular cancer, a pituitary tumor, or hypogonadism — so the male partner must be worked up in parallel and hormone testing is added when indicated.. Deferring it usually just delays the answer.

The Semen Analysis, and Why One Is Rarely Enough

The semen analysis is the cornerstone of the male workup, and it is usually done at least twice. Sperm production varies week to week, so a single sample can misrepresent a man's true baseline; a second analysis, weeks later, confirms whether a low result is real or a bad day 3Ref 3World Health Organization (2021).WHO laboratory manual for the examination and processing of human semen, 6th edition.What a standard semen analysis measures (volume, concentration, total count, motility, morphology, vitality) and that the 6th-edition reference values are decision limits derived from about 3,589 fertile men, marking the lower edge of the fertile range rather than a fertile-or-sterile cutoff.. The sample is produced by masturbation after a short abstinence interval and examined in the lab within about an hour.

Two normal analyses make a significant male factor unlikely and let the evaluation focus elsewhere. Two abnormal ones, or one clearly abnormal result, point toward the next tests — hormones, imaging, and sometimes genetics 1Ref 1American Urological Association / American Society for Reproductive Medicine (2020).Diagnosis and treatment of infertility in men: AUA/ASRM guideline part I.That evaluation of both partners should begin concurrently, that semen analysis is the starting test, and that male infertility can be a presenting sign of serious underlying conditions such as testicular cancer, a pituitary tumor, or hypogonadism — so the male partner must be worked up in parallel and hormone testing is added when indicated.. A borderline first result almost always earns a repeat before anyone draws conclusions, which is why a plan built on a single number is premature.

The reference values used to read the analysis come from the World Health Organization's laboratory manual. Its current edition sets those decision limits from the semen of about 3,589 men who fathered a child within a year 3Ref 3World Health Organization (2021).WHO laboratory manual for the examination and processing of human semen, 6th edition.What a standard semen analysis measures (volume, concentration, total count, motility, morphology, vitality) and that the 6th-edition reference values are decision limits derived from about 3,589 fertile men, marking the lower edge of the fertile range rather than a fertile-or-sterile cutoff.. They describe the lower edge of the fertile range — not a line between fertile and sterile.

What a Semen Analysis Actually Measures

A semen analysis reports several parameters, and no single one decides fertility on its own. The core measures are volume, sperm concentration, the total number of sperm, how many are moving (motility), how many are moving well, the fraction with normal shape (morphology), and how many are alive (vitality) 3Ref 3World Health Organization (2021).WHO laboratory manual for the examination and processing of human semen, 6th edition.What a standard semen analysis measures (volume, concentration, total count, motility, morphology, vitality) and that the 6th-edition reference values are decision limits derived from about 3,589 fertile men, marking the lower edge of the fertile range rather than a fertile-or-sterile cutoff.. Together they sketch how many usable sperm reach the sample and whether they can travel.

Each parameter is read against a reference limit, and being below one lowers the odds without erasing them. A man with reduced motility or a low count can still father a child, and a man with numbers inside every range can still have unexplained trouble conceiving. This is why the analysis is a starting point, not a verdict.

The words on the report can alarm — oligospermia for a low count, asthenozoospermia for poor motility, teratozoospermia for shape, azoospermia for no sperm found. Azoospermia — no sperm found in the ejaculate — is the finding that most changes the path ahead. These are descriptions, not diagnoses. What they mean for a given couple depends on the rest of the workup, the partner's evaluation, and how the two results fit together.

It also helps to know that these labels describe a sample, not a man's identity or his certainty of ever fathering a child. A single low reading can reflect a recent illness, a fever in the prior months, or a poorly timed abstinence interval — which is exactly why a confirmatory analysis matters before anyone treats the first result as the final word 3Ref 3World Health Organization (2021).WHO laboratory manual for the examination and processing of human semen, 6th edition.What a standard semen analysis measures (volume, concentration, total count, motility, morphology, vitality) and that the 6th-edition reference values are decision limits derived from about 3,589 fertile men, marking the lower edge of the fertile range rather than a fertile-or-sterile cutoff..

The History and the Physical Exam

Before any imaging or genetics, the workup takes a careful history and does a focused physical exam — steps that often explain an abnormal semen result on their own. The history covers puberty and testicular descent, prior surgeries or infections, medications, exposures to heat or toxins, sexual and reproductive history, and any change in libido or erections 1Ref 1American Urological Association / American Society for Reproductive Medicine (2020).Diagnosis and treatment of infertility in men: AUA/ASRM guideline part I.That evaluation of both partners should begin concurrently, that semen analysis is the starting test, and that male infertility can be a presenting sign of serious underlying conditions such as testicular cancer, a pituitary tumor, or hypogonadism — so the male partner must be worked up in parallel and hormone testing is added when indicated.. Small details here frequently redirect the whole evaluation.

The exam checks the testes for size and firmness, looks for a varicocele — enlarged veins in the scrotum — and confirms that the anatomy that carries sperm is present and intact. A urologist trained in male reproduction usually performs it, because some findings are subtle. Much of this costs little, which is part of why how much fertility testing costs is a smaller worry on the male side than couples often expect.

Medications and habits matter more than many men realize. Certain prescriptions, and testosterone itself, suppress sperm production, and the exam is where that thread often first gets pulled. Testosterone supplements are a common, reversible cause of a very low count, and unwinding that is a conversation for the prescribing clinician rather than something to change abruptly.

Hormone Blood Tests, and When They Are Needed

Hormone testing is not automatic; it is added when the semen analysis is abnormal or the history suggests a hormonal cause. Male hormone testing for fertility typically starts with follicle-stimulating hormone and testosterone, and may extend to luteinizing hormone, estradiol, and prolactin depending on the picture 1Ref 1American Urological Association / American Society for Reproductive Medicine (2020).Diagnosis and treatment of infertility in men: AUA/ASRM guideline part I.That evaluation of both partners should begin concurrently, that semen analysis is the starting test, and that male infertility can be a presenting sign of serious underlying conditions such as testicular cancer, a pituitary tumor, or hypogonadism — so the male partner must be worked up in parallel and hormone testing is added when indicated.. The pattern of results points to where the problem sits — the testes themselves, or the pituitary gland that signals them.

This matters because low testosterone with the wrong accompanying pattern can signal hypogonadism or, occasionally, a pituitary tumor — findings a male infertility workup is specifically meant to catch 1Ref 1American Urological Association / American Society for Reproductive Medicine (2020).Diagnosis and treatment of infertility in men: AUA/ASRM guideline part I.That evaluation of both partners should begin concurrently, that semen analysis is the starting test, and that male infertility can be a presenting sign of serious underlying conditions such as testicular cancer, a pituitary tumor, or hypogonadism — so the male partner must be worked up in parallel and hormone testing is added when indicated.. A hormonal cause can sometimes be treated directly, which is one reason the blood tests are worth doing rather than moving straight to assisted reproduction.

It also explains why testosterone therapy is the opposite of a fertility treatment. Taking testosterone tells the body to stop its own production and shuts down the signal the testes need to make sperm. When low testosterone is the issue, the approach that protects fertility is usually not the supplement most men assume.

This is one of the more common preventable setbacks a workup uncovers, and it is often reversible once recognized. Because a semen analysis reflects production over the preceding weeks rather than a single day, a change in hormones or medications takes time to show up — so a spacing between tests is expected, and a repeat months later is how the effect of any change is judged 1Ref 1American Urological Association / American Society for Reproductive Medicine (2020).Diagnosis and treatment of infertility in men: AUA/ASRM guideline part I.That evaluation of both partners should begin concurrently, that semen analysis is the starting test, and that male infertility can be a presenting sign of serious underlying conditions such as testicular cancer, a pituitary tumor, or hypogonadism — so the male partner must be worked up in parallel and hormone testing is added when indicated..

Imaging, Genetics, and Finding a Cause

When the semen analysis is very abnormal — a very low count, or no sperm at all — imaging and genetic tests look for a specific, sometimes treatable cause. A scrotal ultrasound can confirm a varicocele and assess the testes; a varicocele is one of the more common and correctable contributors, and its effect on semen parameters is why urologists look for it 4Ref 4American Urological Association / American Society for Reproductive Medicine (2020).Diagnosis and treatment of infertility in men: AUA/ASRM guideline part II.Management options for male-factor infertility, including varicocele repair, the role of IUI/IVF/ICSI, and surgical sperm retrieval for azoospermia, and the genetic evaluation relevant to severe male factor.. Not every varicocele needs repair, but finding one changes the conversation.

Genetic testing enters when sperm are absent or nearly so. Certain chromosomal and Y-chromosome findings, and cystic-fibrosis gene changes tied to a missing sperm duct, can explain azoospermia and help predict whether surgical sperm retrieval is likely to succeed 4Ref 4American Urological Association / American Society for Reproductive Medicine (2020).Diagnosis and treatment of infertility in men: AUA/ASRM guideline part II.Management options for male-factor infertility, including varicocele repair, the role of IUI/IVF/ICSI, and surgical sperm retrieval for azoospermia, and the genetic evaluation relevant to severe male factor.. A karyotype is also part of the workup after recurrent pregnancy loss, where a parental chromosome rearrangement can be the cause.

The aim of all this is a diagnosis, not just a number. A clear cause tells a couple which treatments are worth trying, which are not, and — when sperm can be retrieved surgically — whether IVF with direct sperm injection is realistically on the table.

When Male Infertility Is a Warning Sign of Something Else

An abnormal semen analysis is occasionally the first sign of a serious medical condition, which is one reason the male workup is not optional. Guidelines flag that male infertility can be a presenting sign of testicular cancer, a pituitary tumor, or a genetic or hormonal disorder with broader health consequences 1Ref 1American Urological Association / American Society for Reproductive Medicine (2020).Diagnosis and treatment of infertility in men: AUA/ASRM guideline part I.That evaluation of both partners should begin concurrently, that semen analysis is the starting test, and that male infertility can be a presenting sign of serious underlying conditions such as testicular cancer, a pituitary tumor, or hypogonadism — so the male partner must be worked up in parallel and hormone testing is added when indicated.. For a small number of men, the fertility evaluation is what surfaces a problem that needed attention regardless of any desire to conceive.

This is why the physical exam and, when indicated, imaging are not box-ticking. A testicular mass found on exam or ultrasound is followed up on its own track, urgently, independent of the fertility plan. The workup a couple started to build a family occasionally protects the health of one partner in a way they did not anticipate.

It is also an argument against skipping the man entirely and moving straight to treating the woman. A workup that never examines him can miss not only a fixable fertility problem but, rarely, a diagnosis that matters far more than fertility.

What the Results Change, and What You Can Influence

The point of the workup is to match treatment to cause, and the findings sort couples into a few paths. A correctable problem — a varicocele, a hormonal deficiency, a reversible medication effect — may be treated directly. When sperm are usable but few, intrauterine insemination or IVF may follow; when they are very few or must be retrieved surgically, IVF with intracytoplasmic sperm injection, in which a single sperm is injected into an egg, is the usual route 4Ref 4American Urological Association / American Society for Reproductive Medicine (2020).Diagnosis and treatment of infertility in men: AUA/ASRM guideline part II.Management options for male-factor infertility, including varicocele repair, the role of IUI/IVF/ICSI, and surgical sperm retrieval for azoospermia, and the genetic evaluation relevant to severe male factor..

ICSI is powerful, and it is also often oversold. Guidelines are clear that, without a male factor or a prior fertilization failure, injecting every egg does not improve the odds and is not a default upgrade 5Ref 5Practice Committees of ASRM and SART (2026).Intracytoplasmic sperm injection for nonmale factor indications: a committee opinion.That, absent a male factor or a prior fertilization failure, routine ICSI on all oocytes does not improve live-birth rates and is not a default upgrade — so a completed male workup is what justifies the add-on.. Knowing whether a real male factor exists is what tells a couple whether the add-on is worth its cost — the kind of question a completed workup answers and a skipped one leaves open, as it does in a genuinely unexplained infertility workup.

Some of the picture is modifiable. Smoking tobacco and using cannabis are linked to worse semen parameters and lower success with assisted reproduction. The evidence is strong enough that reducing them is part of standard counseling, and it is one of the few levers a man can actually pull while the rest of the workup proceeds 6Ref 6Practice Committee of ASRM (2024).Tobacco or marijuana use and infertility: a committee opinion.That tobacco and marijuana use are associated with worse sperm parameters and reduced success with assisted reproduction, supporting modifiable-risk counseling as part of the male evaluation..

Matching treatment to a diagnosis is also what keeps couples from paying for interventions they do not need. A clear male-factor finding is what justifies adding ICSI; its absence is a reason to ask why the add-on is being recommended, and to weigh its cost against the evidence 5Ref 5Practice Committees of ASRM and SART (2026).Intracytoplasmic sperm injection for nonmale factor indications: a committee opinion.That, absent a male factor or a prior fertilization failure, routine ICSI on all oocytes does not improve live-birth rates and is not a default upgrade — so a completed male workup is what justifies the add-on.. The workup, in the end, is what turns a vague 'try IVF' into a specific, defensible plan.