Peptide dosing chart: amounts to syringe units

This chart converts amounts into syringe units; it doesn't tell you what amount to use. Enter the vial size and the total solution, and it lists the units and mL on a U-100 syringe for a range of amounts from that vial. Doses come from your prescriber, not from a chart.

Converts a dose you already have; it does not recommend one. How we check our work Sources

Fixed tables for 5 mg and 10 mg vials

Units on a U-100 syringe for each amount, for six common vial and volume combinations. Find the amount in the rows and your vial in the columns.

U-100 units for each amount, by vial and total solution volume
Amount	5 mg in 1 mL	5 mg in 2 mL	5 mg in 3 mL	10 mg in 1 mL	10 mg in 2 mL	10 mg in 3 mL
100 mcg	2	4	6	1	2	3
200 mcg	4	8	12	2	4	6
250 mcg	5	10	15	2.5	5	7.5
300 mcg	6	12	18	3	6	9
400 mcg	8	16	24	4	8	12
500 mcg	10	20	30	5	10	15
750 mcg	15	30	45	7.5	15	22.5
1,000 mcg	20	40	60	10	20	30

Rounded to 0.1 unit. Every value is recalculated from the formula by the site's tests.

How the chart is calculated

units (U-100) = amount (mg) × total solution (mL) ÷ vial (mg) × 100 mL = units ÷ 100

Convert micrograms to milligrams first: 250 mcg is 0.25 mg. From a 5 mg vial with 2 mL, 250 mcg is 0.25 × 2 ÷ 5 × 100 = 10 units.

Small amounts are hard to measure

On a 0.3 mL syringe the smallest line is usually 1 unit (some have half-unit lines); on a 1 mL syringe it's 2 units. An amount that works out to 1 or 2 units sits at the edge of what can be measured, and small errors become large in proportion. A weaker solution spreads the same amount over more units. Whether that's appropriate for a product is a question for a pharmacist; the bac water calculator shows the volume for any concentration.

A conversion chart only. The amounts listed are a fixed range for converting, not suggestions. Use the dose your prescriber gave you and the strength on your own vial or label. If a number surprises you, check it with a pharmacist before drawing it up.

Questions

Why doesn't this chart list doses for each peptide?

Because a dose isn't a conversion. It depends on the product, the person and the prescriber, and several peptides sold online are investigational or not approved for human use at all. A chart of numbers next to compound names would read as advice, so this one only converts.

How do I read the chart?

Find the amount in the first column. The units column is what to draw to on a U-100 syringe from the vial you entered; the mL column is the same volume in millilitres. Struck-through rows are more than 1 mL or more than the whole vial.

How many units is 100 mcg?

From a 5 mg vial with 2 mL, 100 mcg is 4 units. From a 10 mg vial with 2 mL, it's 2 units. From a 10 mg vial with 1 mL, it's 1 unit, which is at the limit of what a syringe can measure.

What if the amount I need isn't in the list?

Use the main calculator, which takes any amount and also shows where it falls between the syringe lines.