HGH vs IGF-1 LR3
HGH and IGF-1 LR3 are compared here on the things that actually differ between them: what class each belongs to, what each acts on, how each is supplied and what each costs per milligram. Where the registry has no figure for one of them the row is left out rather than filled in.
Side by side
| HGH | IGF-1 LR3 | |
|---|---|---|
| Class | Recombinant human growth hormone (191 amino acids) | Insulin-like growth factor analogue |
| Acts on | A recombinant form of the 191-amino-acid pituitary hormone. Acts directly at the GH receptor and indirectly through hepatic IGF-1 production. | A modified IGF-1 with an arginine substitution and a 13-amino-acid extension, reducing binding to IGF binding proteins and extending its active window relative to native IGF-1. |
| Supplied as | Lyophilised powder supplied in international units (iu), commonly as 10iu vials in 100iu kits, or as a pre-filled pen. | Lyophilised powder. |
| Half-life | Short in circulation, typically two to three hours; downstream IGF-1 elevation persists considerably longer. | Substantially longer than native IGF-1, on the order of 20 to 30 hours in published models. |
| Storage | Refrigerated at 2-8 C both before and after reconstitution. Never frozen. Growth hormone is a folded protein and loses activity if frozen or shaken vigorously. | 2-8 C. Particularly sensitive to freeze-thaw cycling. |
| Listings | 6 | 1 |
| Price from | £60 | £40 |
What actually differs
The clearest difference is class: HGH is a recombinant human growth hormone (191 amino acids), IGF-1 LR3 is an Insulin-like growth factor analogue. They are not supplied the same way. HGH comes as a lyophilised powder supplied in international units (iu), commonly as 10iu vials in 100iu kits, or as a pre-filled pen, IGF-1 LR3 as a lyophilised powder. Half-life differs as well: Short in circulation, typically two to three hours; downstream IGF-1 elevation persists considerably longer for HGH against Substantially longer than native IGF-1, on the order of 20 to 30 hours in published models for IGF-1 LR3.
- SerenQ HGH 30iu Peptide Penin stock£60
HGH - 2Ktropinin stock£140
HGH - Genxtropinin stock£150- SerenQ HGH 100iu Peptide Penin stock£165
Quanta Pharma IGF-1 LR3 1mgout of stock£40
Availability checked 2026-09-09. The product page carries live stock.