Side-by-side research comparison of IGF-1 and IGF-1 LR3 across our PubMed, ClinicalTrials.gov, and EuropePMC corpus. 5 head-to-head studies plus 62 on IGF-1 and 9 on IGF-1 LR3.
| IGF-1 | IGF-1 LR3 | |
|---|---|---|
| Drug class | growth factor | growth factor |
| Studies in corpus | 62 | 9 |
| Highest evidence tier | rct | preclinical animal |
| Evidence tier mix | cohort · 3 rct · 20 other · 15 case series · 1 case report · 1 preclinical animal · 9 review · 2 in vitro · 2 | preclinical animal · 6 in vitro · 1 other · 1 |
| Studies with explicit sample size | 16 | 1 |
| Head-to-head studies in corpus | 5 | |
Beyond the literature: here's what third-party Certificate-of-Analysis records (Janoshik, BCC, Auxlabs) say about real IGF-1 and IGF-1 LR3 batches we've tested. Aggregate, public data — cross-reference against the studies below.
We tested 17 IGF-1 batches across 10 manufacturers, 99.17% avg purity.
Fewer than 3 published IGF-1 LR3 COA records so far — not enough for a meaningful purity aggregate yet. Browse what we have →
Studies in our corpus that mention both IGF-1 and IGF-1 LR3 — the gold-standard direct comparison evidence.
**GH's ability to suppress mammary `TPH1` and thereby reduce local serotonin synthesis** adds a mechanistic layer that is entirely separate from the classical GH → IGF-I axis, meaning that stacking GH with LR3 could engage complementary pathways rather than…
This research provides a potential mechanistic explanation for the reduced β-cell function seen in overgrown newborns from pregnancies complicated by conditions like diabetes. The finding that elevated IGF-1 can directly induce an intrinsic insulin secretio…
These findings suggest that **IGF-1 LR3 could be a viable strategy to safely increase both heart muscle and its supporting blood supply before birth**. For potential therapeutic applications aimed at improving congenital heart resilience, this is a crucial …
Looking for vendor-level purity, endotoxin, and HPLC data on IGF-1 or IGF-1 LR3? TitrateLab tracks Certificate-of-Analysis records from the major peptide labs (Janoshik, BCC, Auxlabs) alongside the research above. Cross-reference vendor batches against the studies on this page.