Research Blog
GLOW Blend Reconstitution: mg-to-mL Concentration Math for Three Separate Vials
Published
A vial-by-vial reconstitution math guide for the three peptides commonly grouped under the GLOW blend label: GHK-Cu, BPC-157, and TB-500.
For laboratory and research use only. Not for human consumption.
Researchers who source all three components commonly cited under the "GLOW blend" label — GHK-Cu, BPC-157, and TB-500 — are working with three separate vials, not one combined preparation. Our GLOW blend explainer covers what each component contributes and why the three are grouped together in research discussion. This guide focuses narrowly on the reconstitution arithmetic: how to calculate concentration for each of the three vials, how to keep the numbers from getting crossed between them, and how the math changes across common diluent volumes.
Why Three Separate Calculations, Not One
Because "GLOW" is not a manufacturer-packaged product, there is no single labeled mass covering all three peptides. Each vial — GHK-Cu 100mg, BPC-157 10mg, and a BPC + TB500 combination vial — carries its own labeled mass and requires its own reconstitution calculation. The underlying formula is the same across all three:
Concentration (mg/mL) = Labeled peptide mass (mg) ÷ Diluent volume added (mL)
What differs is the mass going into that formula, which is why the three vials should never be assumed to reach the same concentration from the same diluent volume.
Vial 1: GHK-Cu 100mg
At a 100mg labeled mass, GHK-Cu reaches meaningfully higher concentrations than the other two vials at equivalent diluent volumes:
| Diluent added | Resulting concentration |
|---|---|
| 2 mL | 50 mg/mL |
| 5 mL | 20 mg/mL |
| 10 mL | 10 mg/mL |
Vial 2: BPC-157 10mg
At a 10mg labeled mass, the standalone BPC-157 vial needs far less diluent to reach a comparable working concentration. See the dedicated BPC-157 reconstitution walkthrough for a full worked example:
| Diluent added | Resulting concentration |
|---|---|
| 1 mL | 10 mg/mL |
| 2 mL | 5 mg/mL |
| 5 mL | 2 mg/mL |
Vial 3: BPC + TB500 Combination Vial
The combined vial's labeled mass covers both BPC-157 and TB-500 together, so total-solution concentration (labeled mass ÷ diluent volume) describes combined peptide content per mL, while each compound's individual share has to be read from the vial's Certificate of Analysis and divided by that same diluent volume separately. A researcher who wants the standalone BPC-157 concentration figure from this vial cannot reuse the Vial 1 numbers above — the two are chemically distinct preparations with different mass compositions.
Keeping the Three Numbers From Crossing
The most common transcription error across a three-vial set is applying one vial's concentration to another by habit, particularly between the BPC-157 standalone vial and the BPC + TB500 vial, which sit next to each other conceptually. Labeling each reconstituted vial immediately with its mass, diluent volume, resulting concentration, and preparation date — rather than relying on memory or vial position — is the standard safeguard. A short per-vial log line, filled in at the moment of reconstitution, prevents this more reliably than any mental tracking system.
Diluent Choice
All three vials are lyophilized powder and reconstitute with standard bacteriostatic water. None of the three components in this combination require a different diluent from one another, which simplifies preparation logistics even though the resulting concentrations differ.
Storage After Reconstitution
Once reconstituted, all three vials should be refrigerated at 2-8°C, protected from light, and labeled individually. Because the three peptides do not share a stability profile, they should be stored as separate reconstituted vials rather than pooled into one container, even for short-term convenience.
Frequently Asked Questions
Can the three GLOW components be reconstituted into a single combined vial?
They ship as three separate lyophilized vials with different labeled masses, so each is reconstituted and calculated independently. Combining them into one vial would make it impossible to determine any individual compound's concentration.
Does more diluent always mean a "weaker" research solution?
More diluent volume produces a lower mg/mL concentration for a fixed labeled mass, which is a dilution effect on concentration, not a change in the total peptide mass present in the vial.
Why does the GHK-Cu vial reach a higher concentration than the BPC-157 vial at the same diluent volume?
GHK-Cu's 100mg labeled mass is ten times BPC-157's 10mg labeled mass, so at any identical diluent volume the GHK-Cu concentration figure will be proportionally higher.
How do I find the individual BPC-157 and TB-500 concentrations from the combination vial?
The combination vial's Certificate of Analysis lists each compound's share of the total labeled mass; dividing each compound's individual mass by the diluent volume used gives that compound's own concentration.
Is there a packaged "GLOW" product with a single reconstitution instruction?
No. Optimized Aminos does not sell a packaged GLOW product, so there is no single reconstitution instruction covering all three peptides — each vial follows its own calculation as outlined above.
Reviewed by the Optimized Aminos research team — last updated August 17, 2026.
For laboratory and research use only. Not for human consumption.
Run the numbers for your own vial
The reconstitution calculator takes a labeled vial mass and a solvent volume and returns the resulting concentration in mg/mL, along with the aliquot volume in microlitres for any target mass — the same arithmetic worked through above, without the decimal-place risk of doing it from memory. Bacteriostatic water (10 mL) is the diluent used in these worked examples, and every compound referenced here is third-party tested with a published COA.