IGF-1 LR3 Dosage Calculator & Chart

1Set Up Your Mix

0.333 mg/mL · 333 mcg/mL

1. Pick your peptide

2. How much peptide is in the vial? It's printed on the label — usually something like 5 mg

3. How much water are you adding? More water makes each dose easier to measure

4. How much do you want per dose?

Your Answer — IGF-1 LR3

1 mg in 3 mL

6Draw To This Line

0.06That's This Many mL

50Doses In The Vial

1 mg ÷ 3 mL = 0.333 mg/mL → 20 mcg ÷ 0.333 mg/mL = 0.06 mL → × 100 = 6 units

Looks good. Draw to 6 units on a 1 mL syringe. That is an easy amount to measure, and this vial gives you 50 doses.

When to dose

Time of dayNo particular time of day has been established.

FoodNo fasting requirement has been established.

The studies behind this compound did not test timing or food state as variables, so we are not going to invent a rule. Pick a time you can keep to consistently.

2Week-By-Week Plan — IGF-1 LR3

Start low, work up

When	Dose	How Often	How Many mL	Draw To	Number Of Doses	Peptide Used
Weeks 1–2	20 mcg	daily	0.06 mL	6 u	14	0.28 mg
Weeks 3–4	40 mcg	daily	0.12 mL	12 u	14	0.56 mg
Week 5 onward per 4 weeks from here on	60 mcg	daily	0.18 mL	18 u	28	1.68 mg

Time until the top dose

4 weeks

Peptide used getting there

0.84 mg

Vials you'll need

1 × 1 mg

Once you're at the top dose

1.68 mg / 4 wk · 1.68 vials

Where this plan came from

Built from this peptide's dose range

Where this came from: Built from the doses listed for this peptide below — start at the lowest and step up, using the studies cited on this page. Nobody publishes a week-by-week plan for this peptide, so we built one: the doses are the researched ones shown below, and we simply put them in order from lowest to highest. Treat it as a starting point, not an official schedule.

3Common Doses — IGF-1 LR3

worked out for your mix

Level	Dose	How Often	How Many mL	Draw To	Doses In Vial
Low reported	20 mcg	1× daily	0.06 mL	6 u	50 doses
Standard	40 mcg	1× daily	0.12 mL	12 u	25 doses
Upper reported	60 mcg	1× daily	0.18 mL	18 u	16 doses

Please read this. These numbers come from published research. They are here as reference, not as instructions. A lot of them come from lab studies rather than studies in people, and some of these peptides have never been given to a person at all.

About IGF-1 LR3

Growth Factor

Also known as

Long R3 insulin-like growth factor-1

Class

Growth Factor

Route

Subcutaneous

Half-life

~20–30 h

Evidence tier

Preclinical

An IGF-1 analogue engineered to resist binding-protein sequestration, giving far longer activity than native IGF-1. Carries genuine hypoglycaemia risk. Widely used as a cell-culture supplement; human research use is not supported by trial data.

Buy IGF-1 LR3

Research Equipment

SyringesU-100 insulin · 1 mL · 29–31G

Alcohol wipes70% isopropyl prep pads

Serum base — for topical mixesHyaluronic acid serum for mixing peptides into a serum

Electric cooler caseTSA-approved travel cooler — keeps mixed vials at fridge temperature

Storage caseHard carry case for vials

Paid affiliate links.

Common Questions — IGF-1 LR3

How much bacteriostatic water do I add to a 1 mg vial of IGF-1 LR3?

Adding 3 mL of bacteriostatic water to a 1 mg vial gives 0.333 mg/mL. That is the mix every number on this page is worked out from — change the water figure in the calculator and all the draw amounts update.

What dose of IGF-1 LR3 is used in research?

Published and reported figures for IGF-1 LR3 run from 20 mcg to 60 mcg, typically 1× daily. This site lists each figure with the source it came from rather than giving a single recommended number.

How many units on the syringe is a 20 mcg dose of IGF-1 LR3?

At 0.333 mg/mL, a 20 mcg dose is 6 units on a 1 mL U-100 insulin syringe. One vial at that mix gives about 50 doses.

How strong is the evidence behind these IGF-1 LR3 doses?

IGF-1 LR3 is graded preclinical. Laboratory and animal data only. No human dosing trials have been published. We grade every compound on this site so you can weigh the numbers accordingly — the full method is on our editorial policy page.

Where These Numbers Come From

Preclinical — Preclinical and in-vitro data only — no human dosing trials

Insulin-like growth factor-I and muscle hypertrophy Adams GR, McCue SA. Journal of Applied Physiology, 1998

Mechanistic basis for the hypertrophy claim in preclinical models.

Find on PubMed ↗

Long-R3-IGF-I — properties and applications Francis GL, et al. Journal of Molecular Endocrinology, 1992

Characterises why the LR3 modification extends activity.

Find on PubMed ↗

Newest Studies — —

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Not reviewed by us. This list is pulled straight from Europe PMC as papers are published. Nobody has checked whether these are any good, or whether they change anything above. The dose numbers on this page only ever change after a person reviews the evidence.

IGF-1 LR3 Dosage & Reconstitution