- Common blend example
- 5 + 5 mg (CJC / Ipa)
- Example dose
- 250 mcg
- Common syringe
- U-100 insulin
How blend math works
Blended vials list the total milligrams across all peptides. Concentration uses that total figure, and the draw volume is your target dose divided by concentration.
If your protocol specifies a per-component dose, divide by the labelled ratio (often 1:1) before entering the target.
- 10 mg total / 2 mL = 5,000 mcg/mL
- 250 mcg target = 0.05 mL = 5 units
- A 1:1 blend splits each draw evenly between the two peptides
Worked CJC-1295 / Ipamorelin example
CJC-1295 with Ipamorelin (often without DAC) is the canonical peptide blend, marketed because the two compounds are perceived to work on complementary parts of the growth-hormone axis.
A typical CJC-1295 / Ipamorelin vial holds 5 mg of each peptide for a total of 10 mg. Reconstituted with 2 mL of bacteriostatic water, the total concentration is 5 mg/mL (5,000 mcg/mL).
If your protocol calls for 200 mcg of CJC-1295 and 200 mcg of Ipamorelin per dose (a 1:1 blend), the combined target is 400 mcg. Divided by 5,000 mcg/mL, the draw is 0.08 mL — or 8 units on a U-100 insulin syringe.
The same draw delivers both peptides simultaneously because the vial is a pre-mixed blend. You cannot separate them by drawing differently; the ratio in your dose matches the ratio in the vial.
- 5 mg CJC + 5 mg Ipa = 10 mg total
- 10 mg / 2 mL = 5,000 mcg/mL
- 400 mcg combined dose = 0.08 mL = 8 units
- Each 8-unit draw delivers 200 mcg of each peptide
Why blends complicate the math
A single-compound vial has one mass and one concentration. A blend has at least two masses, a ratio, and a total — which is more for the calculator to track and more for the user to misread.
The most common error is treating the per-component dose as the total. If a protocol says '200 mcg per component' on a 1:1 blend, the calculator needs the total target (400 mcg) — not the per-component number. Entering 200 mcg as the target on a 5 mg/mL concentration gives a draw that is half what the protocol actually calls for.
Second-most-common error: assuming all blends are 1:1. Most CJC-1295 / Ipamorelin vials are 1:1, but other blends exist — some at 2:1 or 5:1 ratios — and the labelled ratio is what determines the per-component math.
- Convert per-component doses to total before entering the target
- Confirm the ratio on the label — do not assume 1:1
- The calculator returns total draw; component amounts follow the ratio
Other peptides that come pre-blended
CJC-1295 / Ipamorelin is the most common blend on the market, but it is not the only one. Other growth-hormone secretagogue combinations (CJC-1295 / Ipamorelin / GHRP-2, MOD-GRF / Ipamorelin) and a smaller set of recovery/repair blends are sold by some vendors.
The blend math is identical regardless of which compounds are mixed: total mg printed on the vial, concentration from total mass divided by water volume, draw volume from target divided by concentration. The ratio matters only when you need a per-component dose; the draw math itself does not change.
Checking the labelled ratio
Most growth-hormone blends are 1:1 CJC-1295 to Ipamorelin, but always confirm your label. The calculator returns the total-peptide draw; component amounts follow the ratio.