IGF-1 LR3 Calculator
IGF-1 LR3 (also known as Long R3 IGF-1) reconstitution and dosage reference — calculate vial concentration, BAC water volume, and exact syringe units below.
At the reference preset of a 1mg IGF-1 LR3 vial reconstituted with 1 mL of bacteriostatic water, a 0.05mg dose measures 5 units on a U-100 insulin syringe.
IGF-1 LR3 is a 83-amino-acid analogue of insulin-like growth factor 1 with an extended N-terminus and Arg3 substitution that gives it a longer half-life and weaker binding to IGF-binding proteins.
- Concentration
- 1 mg/mL
- Draw volume
- 0.05 mL
- Units (U-100)
- 5
- Doses per vial
- ≈ 20
- Reference preset
- 1mg · 1mL · 0.05mg
Reference values from the default preset — adjust the calculator below for your vial.
How to use this calculator›
- 1. Vial — the peptide amount printed on the vial, in milligrams.
- 2. BAC water — the bacteriostatic water added to the vial. More water means a lower concentration and a larger, easier-to-read draw.
- 3. Dose — the single dose being measured, in milligrams.
- 4. Syringe — the barrel being drawn into. The diagram rescales to that syringe, so the same dose sits at a different mark on a 0.3 mL barrel than on a U-100.
Educational reference only — not medical advice or a dosing recommendation.
What is IGF-1 LR3?
IGF-1 LR3 is a 83-amino-acid analogue of insulin-like growth factor 1 with an extended N-terminus and Arg3 substitution that gives it a longer half-life and weaker binding to IGF-binding proteins. Used in research and bodybuilding contexts; safety profile in humans is poorly characterized.
Where researchers source this
Vendors below have been manually vetted for third-party COA practice and shipping reliability. Verify the current Certificate of Analysis on the vendor's product page before purchase.
USA-based research vendor publishing a per-lot Certificate of Analysis and dispatching same-day via USPS, UPS Ground or FedEx, with 3–5 day standard delivery. Ships within the United States only. Also stocks reconstitution supplies and several compounds in oral tablet form, including orforglipron, tesofensine and dihexa.
Buy IGF-1 LR3 1mg Vial →Affiliate link — we may earn a commission at no extra cost to you.
Apollo Peptide SciencesUSA-based research vendor with third-party HPLC and mass spectrometry COAs plus endotoxin reports published per product. Specialty in GLP-1 reference compounds (Semaglutide, Tirzepatide, Retatrutide). Ships within 48 hours via USPS Priority/Express. 120-day cookie window — the longest US attribution in the space.
Buy IGF-1 LR3 →Affiliate link — we may earn a commission at no extra cost to you.
| 1 mg | lyophilized powder |
| 5 mg | lyophilized powder |
| 0.02 mg | ≈ 2 U-100 units (at 1mg / 1mL) |
| 0.05 mg | ≈ 5 U-100 units (at 1mg / 1mL) |
| 0.1 mg | ≈ 10 U-100 units (at 1mg / 1mL) |
How it's typically prepared
Reconstitute with BAC water; refrigerate. IGF-1 LR3 is potent — start low.
Frequently asked questions
- Is IGF-1 LR3 the same as IGF-1?
- No — LR3 is an engineered long-acting analogue. Native IGF-1 has a much shorter half-life.
PeptideDose is an educational reference. It is not medical advice and does not replace consultation with a licensed healthcare provider. Doses shown in presets are derived from published protocols and product labels — they are not personal recommendations.