How bad is a hCG lapse for Fertility?

jc2c

Member
I'm on TRT + hCG (Pregnyl) + FSH (urofollitropin). How bad is a lapse in hCG for fertility? About 2 weeks. My Pregnyl Rx got messed up so I ran out. Maybe the urofollitropin has some LH in it??
 
I was in the same situation a year ago and I tested semen right before and right after because I was freezing a bunch for future use. Bottom line, in my case counts went down from a concentration of 198 million per ML (5ml ejaculate in the sample=400 million total motile count) to 44 million per ML (4ml in that ejaculate= 93.3 million total motile count). So it's a massive drop. Even while staying on FSH.

So the absence of HCG or reduction in dosage for a short time makes a big difference. At least in the context of being on low-dose TRT. However, 'Normal' is > 15M concentration and > 20M total motile count, so even with the break from HCG, I was still well above normal. Note, that's after a solid 6 months of higher dose Hcg and FSH, so testicles were pretty large and healthy.

It's a bit more complicated when you look at the full picture of course. I actually did an HCG shot a couple of days before my "after" test noted above-- so if I hadn't, my total volume would have gone down significantly (hcg definitely increases semen volume per ejaculate). Also, I was on HGH which helps counts. And have a bunch of other stuff in my regimen including danazol for shbg control and so on.
 

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⚠️ Medical Disclaimer

This tool provides predictions based on statistical models and should NOT replace professional medical advice. Always consult with your healthcare provider before making any changes to your TRT protocol.

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Understanding Your Hormones

Estradiol (E2)

A form of estrogen produced from testosterone. Important for bone health, mood, and libido. Too high can cause side effects; too low can affect well-being.

DHT

Dihydrotestosterone is a potent androgen derived from testosterone. Affects hair growth, prostate health, and masculinization effects.

Free Testosterone

The biologically active form of testosterone not bound to proteins. Directly available for cellular uptake and biological effects.

Scientific Reference

Lakshman KM, Kaplan B, Travison TG, Basaria S, Knapp PE, Singh AB, LaValley MP, Mazer NA, Bhasin S. The effects of injected testosterone dose and age on the conversion of testosterone to estradiol and dihydrotestosterone in young and older men. J Clin Endocrinol Metab. 2010 Aug;95(8):3955-64.

DOI: 10.1210/jc.2010-0102 | PMID: 20534765 | PMCID: PMC2913038

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