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Peptide Library / Growth Hormone / Recovery

PEG-MGF

Pegylated Mechano Growth Factor

PEG-MGF Research Protocol

Complete Research Guide 4 min read1 peer-reviewed references

Quickstart Overview

PEG-MGF is a pegylated form of Mechano Growth Factor. The attached polyethylene-glycol chain protects the peptide from rapid degradation, extending its half-life from minutes to days and allowing systemic rather than purely local effects.

Reconstitution
Add 1.0 mL bacteriostatic water to a 2 mg vial → 2 mg/mL
Literature Range
200–400 mcg per administration
Measuring Reference
At 2 mg/mL: 200 mcg = 0.1 mL = 10 units
Frequency
2–3× weekly
Route (studies)
Subcutaneous
Half-life
Days (pegylated)

Scientific Data

Molecular Formula
—
Molecular Weight
—
Sequence
PEGylated IGF-1Ec peptide
Sequence Length
21
CAS
Research compound
Peptide Family
IGF splice variant
Half-life
Refer to published literature
Solubility
Bacteriostatic water, sterile saline
Storage
Lyophilized: -20°C. Reconstituted: 2–8°C, use within 2–4 weeks.
Appearance
White lyophilized powder
Standard: 2 mg vial · 1 mL diluent

Dosing & Reconstitution Guide

Interactive Reconstitution
Adjust vial size, diluent and target dose. Results update live.
Full Precision Calculator →
Concentration
2.00 mg/mL
Draw Volume
0.100 mL
Syringe Units
10.0 U
Doses / Vial
10

Units assume a U-100 insulin syringe (100 units = 1 mL). PEGylation extends the half-life to days, enabling systemic (not just local) use.

Frequency: 2–3× weekly

Reconstitution Steps

  1. 1Allow the lyophilized vial and bacteriostatic water to reach room temperature (~15 min).
  2. 2Swab both vial stoppers with a fresh 70% isopropyl alcohol pad and let them dry.
  3. 3Draw 1.0 mL of bacteriostatic water into a mixing syringe.
  4. 4Insert at an angle and let the water run slowly down the glass wall — never directly onto the powder.
  5. 5Gently swirl (do not shake) until the solution is completely clear.
  6. 6Label with date and concentration (mg/mL) and refrigerate at 2–8 °C immediately.

Supplies Needed

Planning example for a 8-week protocol at approximately 200 mcg per day.

Peptide (2 mg vials)
Estimate vials from total mass: 200 mcg/day × 56 days.
Bacteriostatic Water
One 10–30 mL vial typically covers a full cycle.
Insulin Syringes (U-100)
One per administration (29–31 G, 0.3–0.5 mL).
Alcohol Swabs
Two per administration (vial + site).
Sharps Container
Required for safe disposal.

Protocol Overview

Goal
Model systemic MGF signalling for muscle repair.
Schedule
2–3× weekly, 4–8 weeks.
Dose Range
200–400 mcg per dose.

Dosing Protocol

Standard
200–400 mcg per administration
Frequency
2–3× weekly, non-training or post-training
Target
200 mcg typical
Cycle Length
4–8 weeks
Timing
Post-training on workout days
Route
Subcutaneous

Storage Instructions

Lyophilized
−20 °C long term (18–24 months); stable at room temperature for short transit.
Reconstituted
2–8 °C refrigerated; use within 4 weeks.
Light
Protect from direct light; keep in the original carton.
Freeze/Thaw
Avoid repeat freeze–thaw cycles after reconstitution.

Important Notes

  • Longer half-life means less frequent dosing than native MGF.
  • Human evidence remains limited.

How This Works

PEGylation shields MGF from enzymatic breakdown and renal clearance, so the IGF-1Ec peptide circulates for days instead of minutes. This lets satellite-cell-activating signals reach muscle systemically, supporting proliferation and repair across trained tissue. The mechanism at the receptor level mirrors native MGF; PEGylation changes only the pharmacokinetics.

Potential Benefits & Side Effects

Reported in research
  • Extended half-life for systemic exposure
  • Satellite-cell activation across trained muscle
  • Supports recovery and hypertrophy with training
  • Convenient 1–3× weekly dosing
Possible considerations
  • Injection-site reactions
  • Limited human data
  • Water retention possible
  • Theoretical growth-factor considerations

Lifestyle Factors

  • Adequate hydration and 7–9 h of sleep are standard controls in most research protocols.
  • Consistent dose timing improves the reliability of any self-tracked endpoints.
  • Maintain a clean, sterile workflow for every draw to avoid contamination.

Injection Technique

  1. 1Wash hands, then prep the vial top and the target site with separate alcohol swabs.
  2. 2Pinch a subcutaneous skin fold (abdomen, ~2 inches from the navel) and insert at 45–90°.
  3. 3Depress the plunger slowly over 3–5 seconds, hold 5 seconds, then withdraw.
  4. 4Rotate sites each administration and dispose of the syringe in a sharps container.

Frequently Asked Questions

Third-party HPLC testing

CG Labz Verified Batches

No published batches yet.

Research Disclaimer

All compounds are supplied strictly for laboratory research. Dosing figures below summarize ranges reported in published preclinical and clinical literature for reference purposes only. CG Labz does not provide medical advice or individualized dosing recommendations.

Peer-reviewed literature

References

  1. [1] Journal of Physiology
    Goldspink G. et al. Mechano growth factor splice variant and muscle.
    View Source