IGF-1 LR3 half-life and pharmacokinetics chart
Pre-filled plasma half-life model for IGF-1 LR3. See how a 25 hours half-life affects steady state, accumulation, peak-trough swing, and clearance timing.
Preset values: 40 mcg every day, half-life ~25 hours.
LR3 modification extends half-life to ~20–30h. Daily dosing leads to moderate accumulation (~2×).
Open interactive chart →Why these values?
The half-life used here (25 hours) is the published or well-established estimate for IGF-1 LR3 from pharmacokinetic studies. The default dose (40 mcg) and cadence (every day) reflect typical standard protocols — not a prescription or recommendation. Your specific product's label and your clinician's protocol override any default here.
Accumulation. With a half-life of 25 hours and dosing every day, the ratio τ/t½ = 0.96 gives an accumulation factor of ~2.06×. That means the steady-state peak plasma mass is about 2.1× the mass of a single dose.
Time to steady state. Approximately 5 half-lives (~5.2 days) of consistent dosing before average concentration stops rising. Dose-escalation protocols that change doses before this point are titrating against a still-rising baseline, which is one reason weekly peptides feel "slow" at the start.
How long does IGF-1 LR3 stay in your system?
After a single dose, half of the IGF-1 LR3 is gone in about 25 hours, 97% is cleared in about 5.3 days (five half-lives), and under 1% remains after about 6.9 days.
| Cleared | Remaining | Half-lives | Time after one IGF-1 LR3 dose |
|---|---|---|---|
| 50% | 50% | 1 | 25 hours |
| 75% | 25% | 2 | 2.1 days |
| 90% | 10% | 3.3 | 3.5 days |
| 97% | 3% | 5.1 | 5.3 days |
| 99% | 1% | 6.6 | 6.9 days |
Between doses. At every day, doses land 0.96 half-lives apart, so about 51% of the peak is still present when the next dose goes in. The steady-state swing in this model runs from ~82 mcg at peak to ~42 mcg at trough — a moderate swing with meaningful carry-over from one dose to the next.
A first-order, one-compartment model: it leaves out absorption delay from the injection depot, protein binding and individual differences in clearance, and effects can outlast plasma levels. Good for dosing rhythm; not clinical pharmacokinetics.
IGF-1 LR3 half-life FAQ
What is the plasma half-life of IGF-1 LR3?
This chart uses an estimated IGF-1 LR3 plasma half-life of about 25 hours. Published values can vary by formulation, route, assay, and study design.
How long until IGF-1 LR3 reaches steady state?
A simple first-order model reaches practical steady state after about five half-lives, which is roughly 5.2 days for IGF-1 LR3.
How long does IGF-1 LR3 stay in your system?
After a single dose, half of the IGF-1 LR3 is gone in about 25 hours, 97% is cleared in about 5.3 days (five half-lives), and under 1% remains after about 6.9 days. Those are plasma estimates from a half-life of 25 hours; effects can outlast plasma levels, and detection windows depend on the assay.
How much IGF-1 LR3 is left when the next dose is due?
Dosing every day is 0.96 half-lives apart, so about 51% of the peak level remains at the next dose. At steady state that means a peak of ~82 mcg and a trough of ~42 mcg in the model.
Does this IGF-1 LR3 pharmacokinetics chart recommend a dosing schedule?
No. It visualizes half-life, accumulation, peaks, and troughs from values you enter. It is not a prescription, dose recommendation, or substitute for the product label or clinician guidance.
Why does steady state matter for IGF-1 LR3?
Steady state explains why long-half-life compounds can keep rising for weeks after starting or changing a dose, while short-half-life compounds behave more like brief pulses.
Related for IGF-1 LR3
Half-life charts for related peptides: CJC-1295 (8 days), GHRP-2 (15 minutes), GHRP-6 (30 minutes), Hexarelin (1 hour).
Track your real IGF-1 LR3 protocol
Peptide Protocol logs every actual injection time and shows your real timeline — not a model. Side-effect tracking included.
Get the iPhone app →Educational use only. Nothing on this page constitutes medical advice. Pharmacokinetic parameters are published estimates; individual PK varies. Use label values and consult a clinician for any dosing decision.
Educational use only. Peptide Protocol is an informational tool. Nothing on this page constitutes medical advice. Many peptides are prescription-only or restricted in your jurisdiction. Always consult a licensed healthcare professional before injecting any compound.