How do you calculate a peptide blend?

Treat each peptide separately on the same volume. Divide each peptide's mg by the mL of water to get its concentration. Pick the one peptide you are targeting and divide the amount you want by its concentration to get mL, then multiply by 100 for units on a U-100 syringe. Multiply that same mL by each other peptide's concentration to see how much of it comes along.

How many units of a blend do I draw for a set amount of one peptide?

Units = amount ÷ (mg of that peptide in the vial ÷ mL of water) × 100. Example: a KLOW 80 mg vial (50 mg GHK-Cu + 10 mg KPV + 10 mg BPC-157 + 10 mg TB-500) mixed with 3 mL has 3.333 mg/mL of BPC-157, so 500 mcg of BPC-157 is 15 units. That draw also holds 2.5 mg GHK-Cu, 500 mcg KPV, 500 mcg BPC-157 and 500 mcg TB-500. The amount is an example for the math, not a recommendation.

Can I change the ratio of peptides in a blend?

No. The ratio is set when the vial is made, and every draw takes the same share of each peptide. Drawing more of one means drawing more of all of them. Changing the water volume changes the draw size, not the ratio. To set each peptide on its own, they need to be in separate vials.

Does adding more water change how much of each peptide I get?

Not per vial. The total mg of each peptide stays the same; more water spreads it over more liquid, so each 10 units holds less of every peptide and you draw more units for the same amount. The ratio between the peptides does not change.

What is the difference between a blend and a stack?

A blend is several peptides already mixed in one vial, with a fixed ratio. A stack is the same peptides in separate vials, taken together; each amount can be set independently, and each vial uses ordinary single-peptide reconstitution math.

Is this peptide blend calculator free?

Yes. It is free, needs no account, and runs entirely in your browser; nothing you type is sent anywhere. Dose Track for iOS and Android also supports single-vial blends: save the vial with the mg of each peptide and every logged draw records how much of each peptide it held.

Peptide Blend Calculator: Units for Each Peptide

Peptide Blend Calculator

For vials with two to five peptides mixed together, like KLOW, GLOW or BPC-157 + TB-500. Enter what is in the vial and get the units to draw, plus how much of every peptide that draw holds.

Short answer: divide each peptide's mg by the mL of water to get its concentration. For the peptide you are targeting, amount ÷ concentration × 100 = units on a U-100 syringe; the same draw holds every other peptide in the vial's fixed ratio. Example: a KLOW 80 mg vial (50 mg GHK-Cu + 10 mg KPV + 10 mg BPC-157 + 10 mg TB-500) with 3 mL holds 1.667 mg GHK-Cu, 333.3 mcg KPV, 333.3 mcg BPC-157 and 333.3 mcg TB-500 in every 10 units.

Start from a common blend (check your label)

Peptides in the vial (mg)

Bacteriostatic water (mL)

Syringe scale

Peptide to target

Amount of that peptide

Runs entirely in your browser; nothing you type is sent anywhere. Arithmetic on the numbers you enter, not dose advice. Mixing a single peptide? Use the peptide reconstitution calculator.

How to calculate a peptide blend

A blend vial is one solution with several peptides in it. Whatever volume you draw, you get every peptide in it, in the same proportion as the vial. So the math is the ordinary single-peptide math, run once for each peptide on the same volume:

Concentration of each peptide = mg of that peptide in the vial ÷ mL of bacteriostatic water
Volume to draw = the amount you want of one peptide ÷ that peptide's concentration
Syringe units = volume (mL) × 100 on a U-100 syringe
Each other peptide in that draw = volume (mL) × its concentration
Draws per vial = mg of the targeted peptide ÷ amount per draw. Every peptide runs out on the same draw.

Worked examples

Targeting one peptide: KLOW 80 mg, 3 mL

Concentrations. GHK-Cu 50 ÷ 3 = 16.667 mg/mL, KPV 10 ÷ 3 = 3.333 mg/mL, BPC-157 10 ÷ 3 = 3.333 mg/mL, TB-500 10 ÷ 3 = 3.333 mg/mL
Volume for 500 mcg of BPC-157. 0.5 ÷ 3.333 = 0.15 mL
Units. 0.15 × 100 = 15 units
The rest of the draw. 0.15 × 16.667 = 2.5 mg GHK-Cu, 0.15 × 3.333 = 500 mcg KPV, 0.15 × 3.333 = 500 mcg TB-500
Draws per vial. 10 mg ÷ 0.5 mg = 20 draws

From units drawn: BPC-157 + TB-500, 5 mg + 5 mg, 2 mL, 10 units

Volume. 10 units ÷ 100 = 0.1 mL
Each peptide. 0.1 × 2.5 mg/mL = 250 mcg BPC-157, 0.1 × 2.5 mg/mL = 250 mcg TB-500
Draws per vial. 2 mL × 100 = 200 units ÷ 10 = 20 draws

Amounts in the examples are there to show the math, not recommendations. How much to take is a decision for you and your prescriber.

Common blends: amount of each peptide per 10 units

Commonly labeled compositions at 2 and 3 mL of water, U-100 syringe. Each blend has its own guide with 2, 3 and 5 mL charts and the research status of every peptide in it.

Amount of each peptide in 10 units (0.1 mL). Check the amounts on your own label.
Blend	Commonly labeled	10 units at 2 mL	10 units at 3 mL
KLOW 80 mg	50 mg GHK-Cu + 10 mg KPV + 10 mg BPC-157 + 10 mg TB-500	2.5 mg GHK-Cu, 500 mcg KPV, 500 mcg BPC-157 and 500 mcg TB-500	1.667 mg GHK-Cu, 333.3 mcg KPV, 333.3 mcg BPC-157 and 333.3 mcg TB-500
GLOW 70 mg	50 mg GHK-Cu + 10 mg BPC-157 + 10 mg TB-500	2.5 mg GHK-Cu, 500 mcg BPC-157 and 500 mcg TB-500	1.667 mg GHK-Cu, 333.3 mcg BPC-157 and 333.3 mcg TB-500
GLOW 50 mg	35 mg GHK-Cu + 10 mg TB-500 + 5 mg BPC-157	1.75 mg GHK-Cu, 500 mcg TB-500 and 250 mcg BPC-157	1.167 mg GHK-Cu, 333.3 mcg TB-500 and 166.7 mcg BPC-157
BPC-157 + TB-500, 5 mg + 5 mg	5 mg BPC-157 + 5 mg TB-500	250 mcg BPC-157 and 250 mcg TB-500	166.7 mcg BPC-157 and 166.7 mcg TB-500
BPC-157 + TB-500, 10 mg + 10 mg	10 mg BPC-157 + 10 mg TB-500	500 mcg BPC-157 and 500 mcg TB-500	333.3 mcg BPC-157 and 333.3 mcg TB-500
CJC-1295 + Ipamorelin, 5 mg + 5 mg	5 mg CJC-1295 (no DAC) + 5 mg Ipamorelin	250 mcg CJC-1295 (no DAC) and 250 mcg Ipamorelin	166.7 mcg CJC-1295 (no DAC) and 166.7 mcg Ipamorelin
CJC-1295 + Ipamorelin, 2 mg + 2 mg	2 mg CJC-1295 (no DAC) + 2 mg Ipamorelin	100 mcg CJC-1295 (no DAC) and 100 mcg Ipamorelin	66.7 mcg CJC-1295 (no DAC) and 66.7 mcg Ipamorelin

Amount of each peptide in 10 units (0.1 mL). Check the amounts on your own label.

Blend

Commonly labeled

10 units at 2 mL

10 units at 3 mL

KLOW 80 mg

50 mg GHK-Cu + 10 mg KPV + 10 mg BPC-157 + 10 mg TB-500

2.5 mg GHK-Cu, 500 mcg KPV, 500 mcg BPC-157 and 500 mcg TB-500

1.667 mg GHK-Cu, 333.3 mcg KPV, 333.3 mcg BPC-157 and 333.3 mcg TB-500

GLOW 70 mg

50 mg GHK-Cu + 10 mg BPC-157 + 10 mg TB-500

2.5 mg GHK-Cu, 500 mcg BPC-157 and 500 mcg TB-500

1.667 mg GHK-Cu, 333.3 mcg BPC-157 and 333.3 mcg TB-500

GLOW 50 mg

35 mg GHK-Cu + 10 mg TB-500 + 5 mg BPC-157

1.75 mg GHK-Cu, 500 mcg TB-500 and 250 mcg BPC-157

1.167 mg GHK-Cu, 333.3 mcg TB-500 and 166.7 mcg BPC-157

BPC-157 + TB-500, 5 mg + 5 mg

5 mg BPC-157 + 5 mg TB-500

250 mcg BPC-157 and 250 mcg TB-500

166.7 mcg BPC-157 and 166.7 mcg TB-500

BPC-157 + TB-500, 10 mg + 10 mg

10 mg BPC-157 + 10 mg TB-500

500 mcg BPC-157 and 500 mcg TB-500

333.3 mcg BPC-157 and 333.3 mcg TB-500

CJC-1295 + Ipamorelin, 5 mg + 5 mg

5 mg CJC-1295 (no DAC) + 5 mg Ipamorelin

250 mcg CJC-1295 (no DAC) and 250 mcg Ipamorelin

166.7 mcg CJC-1295 (no DAC) and 166.7 mcg Ipamorelin

CJC-1295 + Ipamorelin, 2 mg + 2 mg

2 mg CJC-1295 (no DAC) + 2 mg Ipamorelin

100 mcg CJC-1295 (no DAC) and 100 mcg Ipamorelin

66.7 mcg CJC-1295 (no DAC) and 66.7 mcg Ipamorelin

The one thing a blend can't do

You cannot adjust one peptide on its own. The ratio is fixed when the vial is made, so drawing more for one peptide draws more of all of them, and changing the water only changes how many units a draw is. If you need different amounts of each, they have to be in separate vials (a stack), each worked out with the single-peptide reconstitution calculator.

Before using any blend, check the label against what you expect: the same blend name can be sold with different amounts, and every number on this page depends on them.