IGF-1 LR3
Also called Long R3 IGF-1
No single human route established in this referenceAnimal / laboratory reference
Research reference
Animal / laboratory study
LR3IGF-I catabolic-rat experiment
Continuous osmotic-pump exposure in rats
7 days
Tomas et al., Biochemical Journal (1992) ↗When results may show
IGF-1 LR3
Evidence gap- When change was measured
- Body weight, nitrogen balance, muscle protein turnover and organ weights were measured—not human muscle gain.
- When to assess
- 7 days
- Conditions and limitations
- Dexamethasone-exposed male rats. LR3IGF-I is not mecasermin. Animal pump exposure cannot establish human post-workout injections, amounts or cycle lengths.
- When to stop
- The measured study window is not a validated personal quit rule. Do not increase or prolong exposure because an expected result is absent; severe or persistent reactions need prompt clinical review.
Research timing is descriptive, not a promise or personal instruction. A severe or persistent reaction needs prompt clinical review. This is not medical advice.
Modelled level — every day
1× is the peak after a single dose.
- Steady-state peak
- 1.77× single dose
- Time to steady state
- 4.2days
- Administrations
- 7/ week
Read off the modelled curve, not an even-interval formula
About five half-lives
Where these numbers come from
- Tomas et al., Biochemical Journal (1992)LR3IGF-I is not mecasermin. Animal pump exposure cannot establish human post-workout injections, amounts or cycle lengths.