Questions tagged [sperm]

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Why doesn't semen analysis usually use darkfield microscopy?

Bright field microscopy has too-low contrast and phase contrast microscopy has diffraction halos that can look like noise?
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53 views

Is the quality of sperm higher when ejaculated outside a lab building than when inside one?

Context of the question: storing sperm in cryobanks. I read the following comment: I could find the relevant citations when I have some time, but I seem to remember some research findings that show ...
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1answer
51 views

Why are anti-inflammatories prescribed for an epididymis inflammation?

I have an inflammation of the epididymis. I took blood and urine tests and it's not caused by STDs or any bacteria that would show up on a urine culture. My doctor wants me to take ibuprofen at 400mg ...
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235 views

How is sperm stored in the testicles? [closed]

I know that men's spermatozoids are stored in testicles and are pumped out during sex or masturbation. If someone needs more and thicker sperm, does it matter how long it has been since one has last ...
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46 views

To what extent is the quality of a sperm sample affected during transit via mail from the donor's home to a cryobank?

To what extent is the quality of a sperm sample affected during transit from the donor's home to a cryobank? I found https://intercom.help/legacyfertility/en/articles/4307725-is-my-sample-affected-...
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62 views

Is it preferable to wash sperms before or after freezing?

Is it preferable to wash sperms before or after freezing? (purpose of freezing: to be used sometime in the future for insemination, undecided yet when and via which insemination method) https://doi....
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274 views

What is the velocity of ejaculated semen and does it influence likelihood of fertilisation? [closed]

During male orgasm, the smooth muscle of the penis must contract with sufficient force to ejaculate semen from the penis. Is the mean velocity of ejaculation known? I do not find scientific sources. ...
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2k views

What is the life expectancy of a sperm in dried semen?

How long can sperm survive when semen dries? Can dead sperm cause pregnancy? For example, if semen were left to dry on the toilet seat for 2 hours, and a woman were to use the toilet, is there ANY ...
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1answer
2k views

Can sperm fertilize an egg before reaching full maturity?

There seems to be many couples out there that have intercourse frequently and yet still manage to have a child. However, I found a number of articles that describe sperm maturity as taking at least ...
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1answer
175 views

What is the latest evidence on underwear affecting sperm count?

I have heard/read conflicting information on underwear and sperm count for men. My girlfriend and I are trying to get pregnant. I often go without underwear since I find that to be the most ...