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Generic Peptides IGF-1 LR3 100 mcg and 1 mg Research Vials
Injection · 100 mcg · vial
Out of stock
$55.00
Generic Peptides IGF-1 LR3 is long arginine 3 IGF-1, an 83 amino acid analog of IGF-1 supplied as a lyophilized research powder in two vial sizes: 100 mcg and 1 mg.
GMP-manufactured, each batch is HPLC-verified with the Certificate of Analysis on file. IGF-1 LR3 for sale with U.S. and international shipping, dispatch within two business days after payment.
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Product overview
Generic Peptides IGF-1 LR3 - 100 mcg and 1 mg Vials
Generic Peptides IGF-1 LR3 is long arginine 3 IGF-1, a synthetic analog of human insulin-like growth factor 1 sold as a lyophilized research powder in 100 mcg and 1 mg vials. An arginine replaces glutamic acid at position 3 and thirteen extra residues sit on the N-terminus, for 83 amino acids against 70, which leaves very low affinity for the IGF binding proteins. It is normally read beside a shorter acting splice variant such as PEG MGF.
- Two vial sizes - 100 mcg and 1 mg
- 83 amino acid analog of IGF-1
- Lyophilized powder - needs a solvent
- GMP-made, HPLC-verified, COA on file
Variant Comparison
Both vials hold the same protein, so the choice is how much material one series needs.
| Variant | Dosage | Form and quantity | Best use |
|---|---|---|---|
| IGF-1 LR3 100 mcg | 100 mcg | Lyophilized vial | Pilot batches |
| IGF-1 LR3 1 mg | 1 mg | Lyophilized vial | Longer series |
The 1 mg vial carries ten times the material of the 100 mcg vial and is the size with a U.S. domestic option. A direct hormone such as Somatropin is the usual comparator for an IGF-1 read-out, and a repair peptide such as BPC-157 is held in a separate arm.
How IGF-1 LR3 Works
The analog binds the IGF-1 receptor as a full agonist and drives the same signalling as the natural factor, while its low affinity for IGF binding proteins means less of it is held in circulation. Half-life figures in the source disagree: about 20 to 30 hours in the article text against 56 to 72 hours in its data box. IGF-1 signalling lowers blood glucose, and hypoglycaemia appears among the warnings for the approved recombinant IGF-1 product mecasermin.
Reconstitution & Storage
The powder is dissolved with sterile or bacteriostatic water, which is not in the pack, added down the vial wall and swirled rather than shaken. Divide the amount on the label by the millilitres added to read the concentration. Keep the lyophilized vial at 2-8 C or -20 C, protected from light, and the mixed solution at 2-8 C for about four weeks.
Dosage & Administration
No human dose is stated here and the vial is not a medicine. IGF-1 LR3 has no approved indication and no human pharmacokinetic profile, so nothing on this page is a dosing guide. IGF-1 and its analogues sit in WADA class S2.3 and are banned in sport at all times. A GHRH analog such as Tesamorelin acts on a different receptor and is not a substitute.
Supplied for laboratory research only, not for human or veterinary use. Information provided is for educational purposes only and does not constitute medical advice. Consult a qualified healthcare professional before use. IGF-1 LR3 is supplied as a lyophilized powder and stays stable when the vial is kept cold and dry.
Specifications
| Trade Name | IGF-1 LR3 |
| Generic Name | Long arginine 3 insulin-like growth factor 1 |
| Manufacturer | Generic Peptides |
| Dosage | 100 mcg or 1 mg per vial |
| Package | Lyophilized powder, one vial |
| Drug Class | Peptide; IGF-1 receptor agonist |
| Administration | Subcutaneous (research protocols) |
| Storage | Lyophilized 2-8 C or -20 C; mixed 2-8 C, 4 weeks |
| Prescription Status | Research use only |
| Verification | Batch details confirmed with supplier |
| Shipping | International about USD 35; USA option on 1 mg |
Stacks
For laboratory research only. Consult a healthcare professional before handling any peptide. Amounts shown are research references, not recommended human doses.
FAQ
Before you ask
Questions, answered
IGF-1 LR3, also written LR3-IGF-1 or long arginine 3 IGF-1, is a synthetic and lengthened analog of human insulin-like growth factor 1. It replaces the glutamic acid at position 3 with arginine and adds thirteen amino acids at the N-terminus, for 83 amino acids instead of the 70 of the natural factor. Its CAS number is 143045-27-6 and its formula is C400H625N111O115S9.
The two body changes have two consequences. The analog keeps full activity at the IGF-1 receptor, but its affinity for the IGF binding proteins is very low, so far less of it is bound in circulation and the published work reports about three times the potency of IGF-1. Its metabolic stability is also higher, which is why the half-life is measured in hours rather than minutes.
Sterile or bacteriostatic water is added down the wall of the vial and the contents are swirled, not shaken, until the powder is fully dissolved; the solvent is not included in the pack. Concentration is read by dividing the amount on the label by the millilitres added. A 1 mg vial plus 1 mL gives 1 mg per mL, and a 100 mcg vial plus 1 mL gives 100 mcg per mL.
The lyophilized vial is kept at 2-8 C or at -20 C, protected from light and moisture, and it should reach room temperature before opening. The mixed solution is kept at 2-8 C and used within about four weeks, with repeated freeze and thaw cycles avoided. A solution that turns cloudy or shows particles is discarded rather than used.
IGF-1 LR3 has no human safety record of its own, because no human clinical work on the analog has been published. What is known concerns the pathway: IGF-1 signalling lowers blood glucose, and hypoglycaemia appears among the warnings for the approved recombinant IGF-1 product mecasermin. Injection site reactions and greater appetite are also reported in the same class. Long term effects are not established.
Yes. Insulin-like growth factor 1 and its analogues are listed in class S2.3, growth factors and growth factor modulators, of the WADA Prohibited List, and substances in that class are prohibited at all times, in and out of competition. The listing covers analogues such as IGF-1 LR3 rather than only the natural factor. Athletes are responsible for anything they handle.
Yes, both vial sizes are in stock on this page and can be ordered directly. The 100 mcg and 1 mg vials ship internationally, and the 1 mg vial also has a U.S. domestic option. International shipping is about USD 35, orders are processed in one to two business days and transit runs four to ten days depending on the destination country.
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