A semen analysis is not just a standard lab test; it is a direct reflection of a man’s overall health. The reliability of your results—and by extension, the accuracy of your diagnosis—depends entirely on how you prepare for it. Improper collection, stress, medication, or even a hot bath the night before can render the entire test useless.
In this article, I will explain how to take a semen analysis without making common mistakes, how hormonal medications impact sperm quality, and what to do if your results show abnormalities.
Why Preparation Is More Critical Than You Think ?
Many men assume: “I’ll just walk into the lab, produce a sample, and that’s it.” But sperm cells are incredibly sensitive biomarkers.
They are directly affected by temperature, nutrition, sleep, alcohol, and even your stress levels in the week leading up to the test. If you spent the last week taking hot baths or drinking beer, your results will be poor even if your baseline reproductive health is perfectly fine.
To avoid treating a “lab report” instead of the actual person, you must follow the preparation guidelines exactly.
How to Properly Take a Semen Analysis: Tips and Nuances
Abstinence Period. The gold standard is 2 to 5 days, but absolutely no more than 7. If abstinence is less than 2 days, the sample volume will be too low, and immature cells may artificially inflate your motility readings. If it exceeds 7 days, the sperm stagnates, increasing the proportion of non-motile cells and causing aggregation (clumping). The sweet spot is 3 to 4 days. Never rely on guesswork—track the days carefully.
Sample Collection. Through masturbation only, and directly into a sterile specimen cup. Do not use a standard condom (the lubricants contain spermicides that kill sperm) and do not use the withdrawal method (the first, most sperm-rich fraction of the ejaculate is easily lost). The cup is provided by the laboratory; never wash or rinse it yourself.
Transporting the Sample. The sample must be kept at room temperature (about 68–77°F). Do not warm the cup next to a heater or carry it in your coat pocket where it can overheat. It must be delivered within 30 minutes of collection. The longer it takes, the more sperm cells lose their motility. This is why the absolute gold standard is collecting the sample directly at the lab.
What to Avoid the Week Before the Test. Alcohol, smoking, hot tubs, saunas, steam rooms, and tanning beds. Overheating the scrotum sharply decreases sperm count and motility. You must also avoid taking antibiotics, anti-inflammatories, or hormonal medications without consulting your doctor. If you run a fever before your test, it is best to reschedule.
What You Should Do. Get adequate sleep, maintain moderate physical activity, and eat a balanced diet. Taking a course of antioxidants (zinc, selenium, vitamin E, L-carnitine) 2 to 3 months prior to testing is highly beneficial. Spermatogenesis takes about 72 to 90 days, meaning any lifestyle changes will only show their true impact 2 to 3 months down the line.
Intense Workouts. High-intensity training and bodybuilding can either slightly improve spermatogenesis (by boosting overall physical conditioning and normalizing body weight) or actively impair it. Over-training, anabolic steroid use, pelvic overheating (tight underwear, long periods sitting on workout equipment), or poor-quality supplements can all ruin your numbers. The primary risks are drops in motility and total sperm count caused by chronically elevated cortisol, insufficient recovery, and especially exogenous hormones (testosterone, AAS), which heavily suppress sperm production. If you train naturally and maintain a healthy recovery routine, your semen analysis will typically remain normal.
Psychological Nuances. Keep your stress levels low. Stress drives up cortisol, which suppresses your body’s natural testosterone production and impairs sperm quality. If you find it difficult to produce a sample at the laboratory, ask if you can collect it at home and transport it quickly. Most clinics are highly accommodating.
What to Do If Your Results Show Abnormalities
Below is a reference table outlining the primary abnormalities, their potential underlying causes, and initial recommended steps.
Important: Only a physician (such as a urologist, andrologist, or endocrinologist) can accurately interpret these results in the context of your medical history and additional lab work.
| Abnormality | Meaning | Potential Causes | Initial Steps |
| Oligozoospermia (<15M/mL) | Low sperm count | Varicocele, hormonal imbalances (low FSH/testosterone), infections, overheating, genetics | Repeat the test in 2–3 months; avoid overheating; check FSH, LH, testosterone, prolactin; get a scrotal ultrasound. |
| Asthenozoospermia (<32% motile PR) | Poor motility | Prostate infections, anti-sperm antibodies, oxidative stress, smoking, high viscosity | Run a MAR test, semen culture, oxidative stress tests; start antioxidants (L-carnitine, vitamin E, N-acetylcysteine). |
| Teratozoospermia (<4% normal forms) | High percentage of abnormal sperm | Genetics, varicocele, severe oxidative stress, exposure to environmental toxins | Avoid ionizing radiation, smoking, and alcohol; get genetic testing (AZF microdeletions, karyotyping); consult a geneticist. |
| Necrozoospermia (no live sperm) | All sperm cells are dead | Collection or storage error, severe infection, toxic chemical exposure, certain antibiotics | Retest with strict temperature control; check for infections (PCR); repeat the analysis in one month. |
| Leukocytospermia (>1M/mL) | Inflammation | Prostatitis, vesiculitis, epididymitis, STIs | Ejaculate culture, PCR panel for chlamydia, mycoplasma, ureaplasma, and gonorrhea; get a prostate ultrasound. |
| Hematospermia (blood in semen) | Presence of blood in the sample | Seminal vesicle inflammation, physical trauma, or in rare cases, a tumor | Get a prostate and seminal vesicle ultrasound; see a urologist; obtain an MRI for recurrent cases. |
| Aggregation / Agglutination | Sperm cells clumping together | Anti-sperm antibodies, ongoing infection | Get a MAR test (IgG, IgA); rule out infections; corticosteroids may be prescribed by your doctor. |
| Hyperviscosity | Ejaculate fails to liquefy | Prostatitis or seminal vesicle inflammation, enzymatic deficiencies | Run a semen culture and PCR panel; treat prostatitis if present; increase water intake; take N-acetylcysteine. |
| High DNA Fragmentation | Damaged genetic material | Oxidative stress, varicocele, smoking, aging, overheating, past chemotherapy | Retest only if clinically required; take antioxidants (Vitamin C, E, zinc, selenium); treat varicocele; change lifestyle. |
If your semen analysis shows one or more abnormalities, do not panic. A single test result is never a permanent diagnosis.
Even in perfectly healthy men, numbers can fluctuate from month to month due to stress, a minor cold, or temporary dietary slip-ups. You should always repeat the test in 10 to 14 days (if you suspect a laboratory or collection error) or in 2 to 3 months (following targeted lifestyle improvements).
In most cases, particularly with asthenozoospermia and oligozoospermia, the very first step should be ruling out a varicocele (via a scrotal ultrasound with a Valsalva maneuver) and infections (via a direct swab or PCR test). Once these are ruled out, a full male hormonal panel is warranted (FSH, LH, total and free testosterone, prolactin, estradiol). If your hormones are normal and no varicocele is present, the root cause is often oxidative stress, which typically responds well to long-term antioxidant supplementation.
Most importantly: never attempt to self-medicate using hormones like clomiphene, hCG, or testosterone. Doing so can shut down your natural production and permanently damage your fertility. Always work under the supervision of an andrologist.
How Hormonal Medications Impact Sperm Quality
Sperm production is tightly regulated by follicle-stimulating hormone (FSH) and the local testosterone levels inside the testes. Any interference with the hypothalamic-pituitary-gonadal (HPG) axis can either improve or drastically destroy your sperm quality.
Let’s break down the four most common medications used in this space: hCG, Follitropin (recombinant FSH), testosterone injections, and clomiphene.
hCG (Human Chorionic Gonadotropin). This medication mimics luteinizing hormone (LH), directly stimulating the Leydig cells in the testes to produce testosterone. For secondary (hypogonadotropic) hypogonadism, where the body fails to produce its own gonadotropins, hCG can jump-start spermatogenesis, especially when paired with FSH. However, high doses over prolonged periods cause testosterone to suppress your natural FSH production, leading to a paradoxical drop in sperm count and even azoospermia. To preserve fertility, hCG is typically used at low doses (500–1000 IU per week) alongside FSH.
Follitropin (Recombinant FSH). This acts as a direct stimulant for the Sertoli cells, which are responsible for the actual manufacturing of sperm. Follitropin is the only medication that directly boosts sperm count and motility, particularly in men with naturally low FSH levels. It does not suppress the HPG axis and does not convert into estrogen. Treatment courses are usually long (3 to 6 months), with dosages carefully adjusted for the individual. Follitropin is completely ineffective if your baseline FSH is already normal—in those cases, the fertility issues are not hormonal.
Testosterone Injections (Enanthate, Undecanoate, etc.). Exogenous testosterone is a highly effective male contraceptive. It shuts down your body’s own production of LH and FSH, which typically results in severe oligozoospermia or complete azoospermia within 3 to 4 months. Even replacement doses (100–200 mg per week) will shut down sperm production. Regaining fertility after stopping testosterone takes anywhere from 6 to 18 months, and in some cases, the damage is permanent. If you are planning to have children, long-term testosterone injections are entirely contraindicated. The only exception is replacement therapy for severe hypogonadism when strictly combined with hCG.
The Bodybuilder Exception. A natural question arises: what about professional bodybuilders? Most of the top athletes on the Mr. Olympia stage have children. For instance, Ronnie Coleman has several daughters despite years of heavy steroid cycles. In such cases, there is always a chance that his natural spermatogenesis was not completely suppressed even during a cycle. More likely, when it came time to conceive, he either dropped his dosages or took a strategic break from all performance-enhancing drugs to restore reproductive function. Additionally, public reports indicate that some of his children were conceived using sperm banked prior to his competitive career.
Clomiphene (Clomid). This drug blocks estrogen receptors in the hypothalamus, prompting your body to ramp up its natural production of LH and FSH. In men with normal gonadotropin levels or secondary hypogonadism, it can moderately improve sperm count and testosterone. However, its effectiveness is unpredictable: in some patients, FSH levels spike but sperm production remains unchanged. Long-term use (longer than 6 months) can desensitize these receptors. Clomiphene is entirely ineffective for primary hypogonadism or obstructive forms of infertility.
Dmitry Volkov – is the author of our bodybuilding section is a practicing sports medicine physician based in Dallas, Texas, with 21 years of hands‑on experience in sports pharmacology. At 42, he combines deep academic knowledge with real‑world expertise gained from coaching athletes of all levels — from amateurs to seasoned competitors. He earned his medical degree from a leading Texas institution and spent years working in sports medicine clinics and private practice.
His primary focus is hormonal regulation of muscle growth, the use of anabolic steroids and peptides, and post‑cycle recovery. He understands modern protocols inside out because he consults real people every day, helping them avoid side effects and achieve safe results. His approach is rooted in evidence‑based medicine, yet remains grounded in the realities of both amateur and professional sports.
In his articles, he aims to debunk myths and deliver clear, scientifically sound recommendations. Every piece of content is vetted not only by medical knowledge but also by years of clinical observation. He firmly believes that responsible pharmacology requires a solid grasp of biochemistry, respect for one’s body, and regular medical monitoring — and he works hard to convey these principles in a way that is both accessible and actionable for his readers.
