TRT
Testosterone, cataloged
The calculators and the cited references for testosterone replacement, the esters and the drugs run alongside it. We do the math and trace every number to a real source. We do not tell you what to take or what your numbers should be - that is between you and a licensed provider.
Calculators
Free testosterone calculator
Total testosterone, SHBG and albumin into free and bioavailable testosterone by the Vermeulen method. Matched to the issam.ch reference.
Open ->Draw-volume calculator
Turn a dose in mg and a vial concentration into the exact volume and syringe units to draw.
Open ->Ester half-life visualizer
See how the different esters build up and clear over weeks by injection frequency. Illustrative, from each ester's half-life.
Open ->Reading your labs
High hematocrit on TRT
The threshold where guidelines step in, and the levers that move it.
Read ->Lab interpretationOptimal estradiol on TRT
The E2 debate and why over-suppressing it is its own problem.
Read ->Lab interpretationLow SHBG on TRT
Why low SHBG splits your total and free testosterone apart.
Read ->Lab interpretationTotal testosterone 400 - start TRT?
How the guidelines frame a borderline number plus symptoms.
Read ->Lab interpretationHow often to get bloodwork
The baseline, the recheck, and the markers guidelines watch.
Read ->Protocols and esters
Subcutaneous vs intramuscular
What the head-to-head evidence actually shows on levels and side effects.
Read ->ReferenceHow long TRT takes to work
The timeline benefit by benefit, from libido in weeks to bone over a year.
Read ->ReferencehCG with TRT
Why it is added to preserve testicular function and fertility.
Read ->ReferenceEnclomiphene explained
The SERM that raises your own testosterone instead of replacing it.
Read ->ReferenceEnclomiphene for fertility
The fertility-preserving contrast with standard testosterone.
Read ->Compounds
Pepteca is for education and information only. It does not provide medical advice, diagnosis, or treatment, and its calculators perform unit math only. Always verify with a licensed provider before starting, changing, or stopping any protocol. Many peptides are not approved for human use and may be regulated differently where you live.