# GDF-11: track every shot, units to draw

> Reconstitution calculator, weekly schedule, site rotation for GDF-11. Track it in Peppy, private on your iPhone.

Source: https://peppytracker.com/compounds/gdf-11/
Last updated: 2026-09-02

TGF-β family growth differentiation factor researched in mouse parabiosis studies for potential rejuvenation effects, though follow-up findings remain scientifically contested. In the Peppy catalog, GDF-11 is reconstituted from a vial and drawn up in units on an insulin syringe, dosed in mcg, typically weekly.

## Frequently asked

### How many units is 100 mcg of GDF-11?

It depends on how the vial was mixed. Example: a 2 mg vial plus 2 mL of bacteriostatic water is 1 mg/mL, so 100 mcg is 0.1 mL, or **10 units** on a U-100 insulin syringe. Change the water and the units change. Use the calculator above with your own vial, and verify with your prescriber.

### Can I track GDF-11 in Peppy?

Yes. GDF-11 is one of 123 compounds built into Peppy, with its form, unit and typical frequency prefilled. Add it as a protocol, set your schedule, and Peppy handles the countdown, the log and the reminders (Pro).

### Where should I inject GDF-11?

Follow your prescriber's instructions. For subcutaneous shots the GLP-1 labels list the abdomen, thigh and upper arm and say to rotate. Peppy's body map has 13 sites, suggests the next one, and shows when each was last used. Read the [site rotation guide](https://peppytracker.com/guides/injection-site-rotation/).

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Peppy is a tracking tool, not medical advice. Dose calculations are mathematical conversions only. Always follow your prescriber's instructions and verify every draw-up yourself.

Peppy is a free iPhone app (Pro subscription optional). App Store: https://apps.apple.com/us/app/peptide-tracker-peppy/id6775005514