Quick answer
GLOW 70mg is a lyophilized research blend of three peptides in one vial: GHK-Cu, BPC-157 and TB-500, 70mg of total net peptide. The milligrams of each component are printed on the lot certificate of analysis (COA) that ships with the vial. GLOW usually looks blue because GHK-Cu is a copper complex. Sealed powder is stored at -20°C; after dissolving in bacteriostatic water it is kept at 2–8°C.
GLOW 70mg · lot-specific COA included · HPLC purity and mass-spec identity tested by an independent lab
Table of Contents
- What Is GLOW 70mg?
- GLOW 70mg Key Facts
- GLOW Peptide Ingredients: GHK-Cu, BPC-157 and TB-500
- What Color Is GLOW Peptide?
- GLOW 70mg COA: What the Certificate of Analysis Should Show
- How to Reconstitute GLOW 70mg for Lab Work
- Does GLOW Need to Be Refrigerated? Storage and Shelf Life
- GLOW vs KLOW: What Is the Difference?
- What Published Studies on the GLOW Components Examined
- Regulatory Status
- Where to Buy GLOW 70mg
- Frequently Asked Questions
What Is GLOW 70mg?
GLOW 70mg is a pre-mixed research blend that combines three peptides, GHK-Cu, BPC-157 and TB-500, in a single freeze-dried vial. The “70” is the combined net peptide weight of all three components, not the amount of any one of them.
Researchers use a fixed blend when they want to study the three compounds together while handling one vial, one lot and one COA instead of three. The trade-off is that a blend can’t be split back into its parts, so studies that need to isolate one compound use the single peptides instead.
CoreVionRX supplies GLOW 70mg as a lyophilized research material for laboratory use only.
GLOW 70mg Key Facts
- Components: GHK-Cu, BPC-157 and TB-500
- Vial contents: 70mg total net peptide, lyophilized (freeze-dried) powder
- Amount of each component: printed on the lot COA
- Testing: each lot is checked by an independent lab for HPLC purity and mass-spec identity
- Color: a blue tint is normal; it comes from the copper in GHK-Cu
- Storage: sealed powder at -20°C away from light; after dissolving, 2–8°C
- Status: research use only; not approved by the FDA for any use
GLOW Peptide Ingredients: GHK-Cu, BPC-157 and TB-500
GLOW contains three peptides with very different sizes: a copper-bound tripeptide (GHK-Cu), a 15-amino-acid peptide (BPC-157) and an acetylated seven-amino-acid fragment (TB-500). Each one has its own sequence, molecular weight and CAS number.
| Component | Sequence | Molecular formula | Molecular weight | CAS number |
|---|---|---|---|---|
| GHK-Cu | Gly-His-Lys with a copper(II) ion | C14H21CuN6O4 | 400.90 g/mol | 89030-95-5 |
| BPC-157 | Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val (GEPPPGKPADDAGLV) | C62H98N16O22 | 1419.5 g/mol | 137525-51-0 |
| TB-500 | Ac-Leu-Lys-Lys-Thr-Glu-Thr-Gln (Ac-LKKTETQ) | C38H68N10O14 | 889.0 g/mol | 885340-08-9 |
Sources for formula, weight and CAS: PubChem CID 139035031 (GHK-Cu), CID 9941957 (BPC-157) and CID 62707662 (TB-500). PubChem lists GHK-Cu as the copper complex of the free tripeptide GHK (340.38 g/mol).
GHK-Cu
GHK-Cu is the tripeptide glycyl-L-histidyl-L-lysine bound to a copper(II) ion. GHK was first isolated from human plasma and has a strong affinity for copper. It is studied in fibroblast and extracellular-matrix research, and it is also sold on its own as GHK-Cu 100mg.
BPC-157
BPC-157 (Body Protection Compound-157) is a synthetic 15-amino-acid peptide, a partial sequence of a protein found in gastric juice. Most published work on it comes from rodent and cell models. The single peptide is available as BPC-157 10mg.
TB-500
TB-500 is a synthetic copy of residues 17–23 of thymosin beta-4 (LKKTETQ), with an acetyl group added to the N-terminus. That short stretch is the actin-binding region of the full 43-amino-acid protein. It is also sold on its own as TB-500.
How much of each peptide is in GLOW 70mg?
The total is always 70mg. The milligrams of GHK-Cu, BPC-157 and TB-500 for your vial are printed on its lot COA, so read the split from that report rather than from a general chart. Products sold as “GLOW” by different suppliers don’t all use the same split, which is one more reason to go by the lot COA.
What Color Is GLOW Peptide?
GLOW is usually blue. GHK-Cu is a copper(II) complex, and copper gives it a blue color, so both the powder and the dissolved solution of a blend containing GHK-Cu carry a blue tint. BPC-157 and TB-500 on their own are white powders that dissolve to a colorless solution.
A clear, light-blue solution is what you should see. How deep the blue looks depends on how much GHK-Cu is in the lot and how much water was added. Cloudiness, visible particles or a brown or green tint are not normal; set that vial aside and compare it with its lot COA.
GLOW 70mg COA: What the Certificate of Analysis Should Show
A blend COA has more work to do than a single-peptide COA. It should show that each of the three peptides is present and correct, not only that the vial holds 70mg of “something”.
Check these points on any GLOW certificate of analysis:
- Lot number: it must match the number printed on your vial label.
- Component amounts: the milligrams of GHK-Cu, BPC-157 and TB-500, adding up to 70mg.
- HPLC purity: the method named, a purity figure and the chromatogram it came from. A blend shows a separate main peak for each component.
- Mass-spec identity for each peptide: masses that fit BPC-157 (1419.5 g/mol), TB-500 (889.0 g/mol) and GHK-Cu, which a report may list as the copper complex (about 401 g/mol) or as free GHK (340.38 g/mol).
- Traceable sign-off: the testing lab’s name, the report date and an authorizing signature.
Every CoreVionRX GLOW lot is tested by an independent lab before it reaches the shelf, and the lot-specific COA comes with your order. For a broader walkthrough of HPLC, mass spec and endotoxin reports, see the peptide endotoxin and COA testing guide.
How to Reconstitute GLOW 70mg for Lab Work
To reconstitute GLOW 70mg, add bacteriostatic water slowly down the inside wall of the vial and swirl gently until the powder dissolves. The volume you add only sets the concentration; the 70mg of peptide in the vial stays the same.
Lab prep steps:
- Let the sealed vial reach room temperature before opening, so moisture doesn’t condense on the powder.
- Wipe the stopper with an alcohol swab.
- Add the chosen volume of bacteriostatic water slowly down the vial wall, not straight onto the powder.
- Swirl gently. Don’t shake, which can cause foaming.
- Check that the solution is clear and light blue, then label the vial with lot number, date, volume added and concentration.
How Much Bacteriostatic Water for GLOW 70mg?
There is no single required volume. Divide 70mg by the millilitres added to get the concentration of the whole blend in mg/mL:
| Bacteriostatic water added | GLOW in vial | Total blend concentration |
|---|---|---|
| 2 mL | 70mg | 35 mg/mL |
| 3 mL | 70mg | 23.3 mg/mL |
| 4 mL | 70mg | 17.5 mg/mL |
| 5 mL | 70mg | 14 mg/mL |
To get the concentration of one component, divide that component’s milligrams from the lot COA by the same volume. For example, a component listed at 10mg in 5 mL is 2 mg/mL. Larger volumes give lower concentrations; if several people in a lab prepare solutions, agree on one standard volume and record it the same way every time. The complete reconstitution guide covers technique in more detail.
Does GLOW Need to Be Refrigerated? Storage and Shelf Life
Yes, once it is dissolved. Store sealed GLOW powder frozen at -20°C, away from light and moisture, and keep the dissolved solution refrigerated at 2–8°C.
| State | Temperature | Window |
|---|---|---|
| Sealed powder, long term | -20°C (freezer), dark and dry | Until the expiry date on the vial label |
| Sealed powder, short term | Room temperature | Brief periods only, such as shipping |
| Dissolved solution | 2–8°C (refrigerator) | Up to 30 days, per the product listing |
| Dissolved solution, freezer | Not recommended | Do not freeze the dissolved solution |
Each time the vial comes out of cold storage it warms a little, so keep bench time short and return it quickly. The full peptide storage guide explains why heat, light and repeated warming matter.
GLOW vs KLOW: What Is the Difference?
KLOW is GLOW plus a fourth peptide. GLOW 70mg contains GHK-Cu, BPC-157 and TB-500; KLOW 80mg contains the same three plus KPV (Lys-Pro-Val), a tripeptide fragment of alpha-MSH.
| GLOW 70mg | KLOW 80mg | |
|---|---|---|
| Peptides | 3 | 4 |
| GHK-Cu | Yes (amount on lot COA) | 50mg |
| BPC-157 | Yes (amount on lot COA) | 10mg |
| TB-500 | Yes (amount on lot COA) | 10mg |
| KPV | No | 10mg |
| Total net peptide | 70mg | 80mg |
Both are blue for the same reason: both contain GHK-Cu. The KLOW 80mg research guide covers the four-peptide blend in detail, and the Wolverine stack pairs only BPC-157 and TB-500.
What Published Studies on the GLOW Components Examined
There are no published studies of the GLOW blend itself. The research below looks at each component on its own, and almost all of it is cell-culture or animal work.
- GHK-Cu and collagen in fibroblast cultures (cell culture). Researchers added GHK-Cu to fibroblast cultures and reported increased collagen synthesis at very low (nanomolar) concentrations, without a change in cell number (Maquart et al., 1988, FEBS Lett).
- GHK and gene expression (review). A review summarizes cell and animal studies of GHK and gene-expression data linking it to many biochemical pathways. Both authors work for a company that sells copper-peptide products (Pickart and Margolina, 2018, Int J Mol Sci).
- BPC-157 and tendon fibroblasts (cell and explant culture). Using rat Achilles tendon explants and cultured tendon fibroblasts, researchers reported faster fibroblast outgrowth, better cell survival under oxidative stress and more cell migration, with activation of the FAK–paxillin pathway; cell proliferation itself was not changed (Chang et al., 2011, J Appl Physiol).
- BPC-157 in soft-tissue models (review). A review of tendon, ligament and muscle studies notes that most were done in small rodent models, that only a handful of research groups have studied the peptide in depth, and that findings have not been confirmed in humans (Gwyer et al., 2019, Cell Tissue Res).
- Thymosin beta-4 biology (review). A review covers the full-length protein: actin binding, cell migration and its study in skin, eye, heart and brain models. Note that this research concerns the full 43-amino-acid protein, not only the TB-500 fragment (Goldstein et al., 2012, Expert Opin Biol Ther).
- Identifying TB-500 by LC-MS (analytical method). A racing laboratory developed a liquid chromatography–mass spectrometry method to detect N-acetylated LKKTETQ and its breakdown products in equine samples, and describes TB-500’s key ingredient as that acetylated fragment (Ho et al., 2012, J Chromatogr A).
What is still unknown: how the three peptides behave together in one formulation, and how cell and animal findings relate to any other setting. Independent replication is limited for all three compounds.
Regulatory Status
None of the three GLOW components is an FDA-approved drug, and GLOW is not approved for any use. In July 2026 the FDA’s Pharmacy Compounding Advisory Committee voted to recommend BPC-157 and TB-500 for its compounding bulk-substances list; that vote is advisory, and no final listing had been made as of October 2026. GHK-Cu is scheduled for a separate committee review. BPC-157 and TB-500 are also on the World Anti-Doping Agency’s prohibited list.
CoreVionRX sells GLOW strictly as a laboratory research material. It is not for human or veterinary use and is not sold as a drug, supplement or medical product.
Where to Buy GLOW 70mg
GLOW 70mg is available from CoreVionRX with independent HPLC purity and mass-spec identity testing and a lot-specific COA included with every order. See the GLOW 70mg product page for current price and availability.
GLOW 70mg · lot-specific COA included · ships with independent test data
Researchers who need the components separately can find GHK-Cu 100mg, BPC-157 10mg and TB-500, or the four-peptide KLOW 80mg blend.
Frequently Asked Questions
What is in GLOW 70mg?
GLOW 70mg contains three peptides in one lyophilized vial: GHK-Cu, BPC-157 and TB-500, with 70mg of total net peptide. The milligrams of each component are printed on the lot certificate of analysis.
Why is GLOW peptide blue?
GHK-Cu is a copper(II) complex, and copper gives it a blue color. A clear, light-blue solution is normal for GLOW. Cloudiness, particles or a brown or green tint are not; check that vial against its lot COA.
How much bacteriostatic water do you add to GLOW 70mg?
It depends on the concentration you want. 2 mL gives 35 mg/mL of total blend, 3 mL gives 23.3 mg/mL, 4 mL gives 17.5 mg/mL and 5 mL gives 14 mg/mL. The volume changes only the concentration, not the amount of peptide.
Does GLOW need to be refrigerated?
After it is dissolved, yes: keep it at 2–8°C and do not freeze the solution; the product listing gives up to 30 days. Sealed powder is stored frozen at -20°C, away from light and moisture.
What is the difference between GLOW and KLOW?
GLOW 70mg has three peptides: GHK-Cu, BPC-157 and TB-500. KLOW 80mg has the same three plus KPV, with 50mg GHK-Cu and 10mg each of BPC-157, TB-500 and KPV.
What should a GLOW certificate of analysis show?
A lot number that matches your vial, the milligrams of each of the three peptides, HPLC purity with the method and chromatogram, mass-spec identity for each peptide, and the testing lab’s name, report date and sign-off.
Related Research Guides
- KLOW 80mg research guide
- GHK-Cu research guide
- BPC-157 research guide
- BPC-157 vs TB-500 comparison
- Epitalon 10mg research guide
Written by the CoreVionRX Research Team. Sources: PubChem CIDs 139035031, 9941957 and 62707662 and the PubMed records linked above.
For laboratory research use only. Not for human or veterinary use.
