Follistatin Reconstitution & Dosage Calculator
This free Follistatin calculator turns your vial size, the bacteriostatic water you add, and your target amount into a concentration, a draw volume, and the exact units on a U-100 insulin syringe. Follistatin ships in a 1 mg vial — ten times smaller than a typical peptide vial — so the arithmetic runs at a different scale and the unit toggle matters.
Follistatin reconstitution calculator
Syringe
U-100 insulinPeptide in vial
Target amount
Bacteriostatic water
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Quick summary
- Converts a small vial (mg), bacteriostatic water (mL), and a microgram amount into concentration, draw volume, and U-100 units.
- Reference math for the 1 mg vial size.
- Educational research and measurement tool only — it does not diagnose, treat, or recommend an amount.
What this Follistatin calculator does
This calculator does one job well: it turns your vial size, the amount of bacteriostatic water you add, and your target amount into a concentration (mg/mL), a draw volume (mL), and the matching units on a U-100 insulin syringe. Change any input and the result updates instantly.
Follistatin ships as a freeze-dried powder. Before it can be measured into a syringe it has to be reconstituted — dissolved in bacteriostatic water. How much water you add sets the concentration, and the concentration sets how many units each amount works out to. The presets above cover the most common Follistatin vial setups; use the custom fields for anything else.
How to use the Follistatin calculator
Pick your syringe
Choose the U-100 insulin syringe you'll draw with. Smaller syringes (0.3 mL / 30u) have finer lines, which helps when the draw is small.
Enter your vial and water
Set the milligrams in your Follistatin vial and the bacteriostatic water you added. Together these set the concentration.
Set your target amount
Toggle mg or mcg and pick (or type) the amount you're measuring for. The calculator does the conversion for you.
Read the draw
The result panel shows concentration, draw volume, and the exact U-100 units to pull, plus how many doses your vial contains.
Follistatin reconstitution math, explained
The math is short. Concentration = vial size ÷ bacteriostatic water. Draw volume = target amount ÷ concentration. Units = draw volume × 100 (a U-100 syringe reads 100 units per mL). The table below shows common Follistatin setups and the units for a 100 mcg amount at each.
| Vial size | Bac water | Concentration | Units per 100 mcg |
|---|---|---|---|
| 1 mg | 0.5 mL | 2 mg/mL | 5 units |
| 1 mg | 1.0 mL | 1 mg/mL | 10 units |
| 1 mg | 2.0 mL | 0.5 mg/mL | 20 units |
Follistatin amount-to-units reference
How common amounts convert to U-100 syringe units at two example concentrations. These are arithmetic conversions for reference, not a recommendation of any amount.
| Amount | Volume (mL) | U-100 units |
|---|---|---|
| 50 mcg (0.05 mg) | 0.05 mL | 5 units |
| 100 mcg (0.1 mg) | 0.1 mL | 10 units |
| 200 mcg (0.2 mg) | 0.2 mL | 20 units |
| Amount | Volume (mL) | U-100 units |
|---|---|---|
| 50 mcg (0.05 mg) | 0.1 mL | 10 units |
| 100 mcg (0.1 mg) | 0.2 mL | 20 units |
| 200 mcg (0.2 mg) | 0.4 mL | 40 units |
Mixing, color & storage tips
A small vial
A 1 mg vial holds a tenth of what a standard 10 mg peptide vial does. At 1 mg/mL a 100 mcg target is 10 units, and the whole vial is only ten such draws. Enter 1 for the vial size, not 1000.
A glycoprotein, not a short peptide
Follistatin is a folded glycoprotein rather than a short synthetic chain, which makes it more fragile in solution. Handle it gently and do not expect short-peptide robustness.
Mixing without foam
Add the water very slowly against the inside wall and swirl minimally. Foaming is more damaging to a folded protein than to a short peptide.
Storage
Keep the dry powder cold and dark. Refrigerate once reconstituted, protect from light, and plan around a short window. Do not freeze a mixed vial.
Follistatin supplies checklist
A simple reconstitution shopping list. Confirm vial size and batch documentation before you buy.
Follistatin
- Batch COA on every vial
- Third-party purity tested
- U.S. fulfillment, discreet shipping
Follistatin — frequently asked questions
What does this Follistatin calculator tell me?
It converts your vial size, bacteriostatic water volume, and target amount into concentration in mg/mL, draw volume in mL, and U-100 syringe units. It is a measurement tool, not a recommendation.
Is the Follistatin calculator free?
Yes — free, browser-based, and no account is required.
How much water do I add to a 1 mg Follistatin vial?
1 mL gives 1 mg/mL, which makes the arithmetic clean — every 100 mcg is 10 units. 2 mL halves that to 0.5 mg/mL and doubles the units for the same amount.
How many units is 100 mcg of Follistatin?
At 1 mg/mL it is 10 units (0.1 mL). At 0.5 mg/mL it is 20 units. Units always depend on your exact concentration.
Is this medical advice?
No. This page and calculator are for education and research planning only. Products referenced are sold strictly as research chemicals and are not for human or veterinary use.
Sources & further reading
Related calculators
Follistatin protocol & evidence
There is no established human dosing schedule for Follistatin — the published work is animal or cell-culture research. The protocol page explains what that work does and does not show.