K4 Elite
K4 Elite
Reference notes and summaries of the published research literature on the peptides we supply. For in-vitro research context only.
Sermorelin vs Tesamorelin vs CJC-1295: how three GHRH analog designs solve the same half-life problem in different ways. Laboratory research use only.
Read the research →GLOW and KLOW combine BPC-157, TB-500, GHK-Cu (and KPV). Here's the mechanistic reasoning behind pairing them — and the trials that don't ex…
Read the research →AOD-9604 is the C-terminal lipolytic fragment of human growth hormone. The mechanism, the trial record, and where it fell short. For researc…
Read the research →A research-framed look at Tesamorelin and Ipamorelin — a GHRH analog paired with a selective ghrelin-receptor agonist. For laboratory resear…
Read the research →Glutathione vs NAD+ — one is a recycled redox buffer, the other is consumed as a substrate by sirtuins and PARPs. A research-framed look at …
Read the research →How to store lyophilized and reconstituted peptides — temperature, freeze-thaw cycles, light, and realistic shelf-life expectations for the …
Read the research →5-Amino-1MQ inhibits NNMT — an enzyme that quietly drains NAD+ inside fat cells. The research, the mechanism, and the honest evidence gap. F…
Read the research →NAD+ declines with age and every cell depends on it. But the gap between that fact and any human benefit is where the real research question…
Read the research →KPV is the tail end of α-MSH — the fragment carrying its anti-inflammatory activity without the melanocortin-receptor effects. The gut and N…
Read the research →A research-framed look at cagrilintide (AM833), the long-acting amylin analog — its receptor pharmacology, the AM833 and CagriSema trial rec…
Read the research →What each section of a peptide Certificate of Analysis means — HPLC purity, mass-spec identity, net peptide content, and endotoxin testing. …
Read the research →A research-reference roundup of the peptides drawing the most attention in 2026 — what each is studied for and where the evidence stands. Fo…
Read the research →Semax and Selank are short Russian neuropeptides studied for different neurotransmitter effects. A research-reference comparison of the two.…
Read the research →Why researchers study BPC-157 and TB-500 together — overlapping vs distinct repair pathways, and what the animal literature does and doesn't…
Read the research →How to reconstitute a lyophilized peptide with bacteriostatic water, with the concentration and volume math worked out step by step. For lab…
Read the research →How the single, dual, and triple incretin agonists differ by receptor target and trial data — semaglutide vs tirzepatide vs retatrutide, com…
Read the research →The research behind Tirzepatide, the dual GIP/GLP-1 receptor agonist — what the incretin mechanism is, what the trials reported, and the hon…
Read the research →MOTS-c is encoded in mitochondrial DNA, not nuclear DNA — and that's why researchers call it an exercise mimetic. The AMPK research, explain…
Read the research →Retatrutide is a triple GIP/GLP-1/glucagon receptor agonist. Here's the research on why the third receptor matters — and why it's the counte…
Read the research →A research-framed guide to the “HGH peptides” — the GHRH analogs and ghrelin-receptor secretagogues that prompt the body’s own growth hormon…
Read the research →Why researchers pair Tesamorelin with Ipamorelin — the GHRH-plus-GHRP synergy, what each brings, and the honest gap in the evidence. For lab…
Read the research →A research-framed overview of retatrutide, the GIP/GLP-1/glucagon triple agonist, covering its phase 2 obesity and liver-fat data. Research …
Read the research →A research-framed look at Selank, a tuftsin-derived peptide studied for anxiolytic activity through GABA and enkephalin pathways — without t…
Read the research →A look at the research behind Semax, an ACTH(4–10) analog studied for BDNF, neuroprotection and cognition — and why most of its data is Russ…
Read the research →The research story of GHK-Cu, the copper-binding tripeptide studied for collagen, skin remodeling and gene expression. For laboratory resear…
Read the research →Why researchers pair Ipamorelin with CJC-1295 — the two mechanisms behind GH-secretagogue research, explained with the original studies. For…
Read the research →What the research literature actually says about TB-500 and its parent molecule Thymosin Beta-4 — actin, cell migration, and angiogenesis. F…
Read the research →A research-framed overview of the preclinical literature on BPC-157 — tendon, ligament, muscle, and gut models, plus its proposed angiogenic…
Read the research →