Source comparison
Kisspeptin-10 vs Kisspeptin-54: Same Signal, Different Clock
Both fragments come from the same KISS1 precursor and bind the same receptor. Kisspeptin-54 is the full-length form originally named metastin. Kisspeptin-10 is the C-terminal decapeptide, the shortest sequence that still activates KISS1R. The difference is dur
This comparison does not assign a generated winner or score.
- Both fragments come from the same KISS1 precursor and bind the same receptor. Kisspeptin-54 is the full-length form originally named metastin. Kisspeptin-10 is the C-terminal decapeptide, the shortest sequence that still activates KISS1R.
- The difference is duration. Kisspeptin-54 circulates with a half-life of roughly 32 minutes, kisspeptin-10 with a half-life of roughly 4 minutes, an eight-fold gap that explains why KP-54 sustains LH release far longer per dose (d'Anglemont de Tassigny et al., PLoS One, 2017, PMID 28464043).
- Four minutes is shorter than the time it takes to swab a vial and draw a syringe. A peptide that clears that fast cannot produce a steady blood level from an intermittent subcutaneous injection, which is one reason the research literature runs it as a controlled IV infusion rather than a shot. You can model comparative clearance for any compound with the peptide half-life tracker.
- Kisspeptin-54 carried the fertility work: it triggers final oocyte maturation in IVF (Jayasena et al., J Clin Invest, 2014, PMID 25036713). Kisspeptin-10 carried most of the male LH-pulse work. Vendors sell both under one "kisspeptin peptides" label as though they were interchangeable, then cite a KP-54 trial on a KP-10 product page.