KLOW: 15 vendors compared
KLOW is a single vial holding KPV 10 mg + GHK-Cu 50 mg + BPC-157 10 mg + TB-500 10 mg — 80 mg of peptide in all, at the ratio the vendors who itemise the vial print. 15 indexed vendors price it, from $0.940 to $2.75 per milligram of total peptide (median $1.31). At the median, 80 mg as a blend costs $105 against $195 for the same milligrams bought as separate vials — 46.3% less. No laboratory report indexed here assays KLOW as a blend with a purity figure per component, so the testing evidence on this page is each vendor's own certificates for KPV, GHK-Cu, BPC-157 and TB-500 — 49 checkable lots across 9 vendors.
KPV 10 mg + GHK-Cu 50 mg + BPC-157 10 mg + TB-500 10 mg · sold as 80 mg, 90 mg · newest component assay 21 Sept 2026
Vendors priced
15
15 indexed vendors sell or document it
Median price
$1.31/mg
$0.940 to $2.75 per mg of total peptide
Blend vs parts, 80 mg
$105 / $195
The blend is 46.3% cheaper than the same milligrams in separate vials
Component lots tested
49 / 54
Checkable / all records for KPV, GHK-Cu, BPC-157 and TB-500 at these vendors
What is in the vial
| Compound | In a 80 mg vial | Share | Median $/mg alone | Cost of this part | Lots tested |
|---|---|---|---|---|---|
| KPV | 10 mg | 12.5% | $5.00 | $50 | 20 / 25 |
| GHK-Cu | 50 mg | 62.5% | $0.600 | $30 | 40 / 42 |
| BPC-157 | 10 mg | 12.5% | $5.50 | $55 | 37 / 38 |
| TB-500 | 10 mg | 12.5% | $6.00 | $60 | 24 / 25 |
| Parts, bought separately | 80 mg | 100% | $2.44 | $195 | 121 / 130 |
| KLOW, as a blend | 80 mg | 100% | $1.31 | $105 | 0 |
The parts arrive as 4 vials rather than one, which is a real advantage — each can be dosed on its own and each can be assayed on its own. The blend arrives as one vial, which is cheaper to ship and, as the figures above show, not always cheaper to buy.
Every vendor selling KLOW
| # | Vendor | Score here | Listing | Price / mg | Blend vs parts | Parts tested | Newest test | Laboratory | Visit |
|---|---|---|---|---|---|---|---|---|---|
| 1 |  PeptidePlugs | 8994% | KLOW 80mg80 mg · $80.0010 mg / 50 mg / 10 mg / 10 mg | $1.00 (76%) | $80 / $140 (−$60) | 11 / 11 | Freedom Diagnostics Testing | ||
| 2 |  Ascend ScienceISO/IEC 17025 | 88.694% | KLOW80 mg · $80.5010 mg / 50 mg / 10 mg / 10 mg | $1.01 (77%) | $81 / $166 (−$85) | 2 / 2 | Kovera Labs, ILS Laboratories | Visit siteCodePEPINDEX· 15% off | |
| 3 |  Amino ClubISO/IEC 17025Age-gated COAs | 86.498% | KLOW80 mg · $99.9910 mg / 50 mg / 10 mg / 10 mg | $1.25 (95%) | $100 / $149 (−$49) | 7 / 7 | Freedom Diagnostics Testing, ILS Laboratories | Visit siteCodePEPINDEX· 20% off | |
| 4 |  Bench Grade Peptides | 86.389% | KLOW Blend80 mg · $75.0010 mg / 50 mg / 10 mg / 10 mg | $0.940 (72%) | $75 / $147 (−$72) | 12 / 12 | AV Analytics, Freedom Diagnostics Testing | ||
| 5 |  One Aminos | 82.789% | KLOW Peptide Blend80 mg · $99.9910 mg / 50 mg / 10 mg / 10 mg | $1.25 (95%) | $100 / $165 (−$65) | 5 / 5 | United Laboratories | ||
| 6 |  NeuroLabs Research | 80.291% | KLOW (80MG)80 mg · $107.9410 mg / 50 mg / 10 mg / 10 mg | $1.35 (103%) | $108 / $190 (−$82) | 2 / 2 | Freedom Diagnostics Testing | ||
| 7 |  Ascension Peptides | 78.589% | GHK-Cu 50mg + BPC-157 10mg + TB-500 10mg + KPV 10mg (KLOW 80mg)80 mg · $120.0010 mg / 50 mg / 10 mg / 10 mg | $1.50 (115%) | $120 / $237 (−$117) | 3 / 3 | MZ Biolabs | ||
| 8 |  Evo Labs Research | 7487% | KLOW80 mg · $95.9910 mg / 50 mg / 10 mg / 10 mg | $1.20 (92%) | 3/4 parts | 0 | — | — | |
| 9 |  CuroISO/IEC 17025 | 72.697% | KLOW80 mg · $164.0010 mg / 50 mg / 10 mg / 10 mg | $2.05 (157%) | $164 / $341 (−$177) | 4 / 4 | BTLabs | ||
| 10 | GSGood Science Bio | 67.571% | KLOW (GHK-Cu / BPC-157 / TB-500 / KPV)80 mg · $105.0010 mg / 50 mg / 10 mg / 10 mg | $1.31 (100%) | $105 / $140 (−$35) | 0 | — | — | |
| 11 |  Koi PeptidesAge-gated COAs | 67.592% | KLOW Blend 80mg: KPV/GHK-Cu/BPC-157/TB-500 (10/50/10/10mg)90 mg · $169.9511.25 mg / 56.25 mg / 11.25 mg / 11.25 mg | $1.89 (144%) | 3/4 parts | 0 / 2 | Not named | ||
| 12 | TRTrue Research Labs | 64.268% | KPV BPC-157 TB-500 GHK-CU Blend (KLOW)80 mg · $104.0010 mg / 50 mg / 10 mg / 10 mg | $1.30 (99%) | $104 / $219 (−$115) | 0 | — | — | |
| 13 | LPLicensed Peptides | 60.687% | BPC157, TB500, GHKCu, KPV (Klow Blend) 80mg80 mg · $199.9910 mg / 50 mg / 10 mg / 10 mg | $2.50 (191%) | $200 / $339 (−$139) | 3 / 3 | Vanguard Laboratory, Janoshik Analytical | ||
| 14 | IPImproved Peptides | 54.987% | KLOW 80mg80 mg · $169.0010 mg / 50 mg / 10 mg / 10 mg | $2.11 (161%) | $169 / $274 (−$105) | 0 / 3 | Not named | ||
| 15 | BPBiotech Peptides | 49.160% | KLOW Blend (80mg)80 mg · $220.0010 mg / 50 mg / 10 mg / 10 mg | $2.75 (210%) | $220 / $365 (−$145) | 0 | — | — |
What a certificate can say about a blend
A laboratory testing a KLOW vial reports two different kinds of figure. It measures the content of each component— a Stealth Research Labs report on a CJC-1295 + Ipamorelin vial labelled 5 mg and 5 mg reads “5.33, 5.42 mg”, which is exactly the check a buyer wants. But it reports purity once, for the mixture as a whole: “overall purity 99.74%”. There is no per-component purity on the document.
So a blend report cannot be broken into one record per peptide without attaching to each part a purity figure the laboratory never measured. That is why 0 records on this index name KLOWitself, and why the testing column in the table above counts each vendor’s certificates for KPV, GHK-Cu, BPC-157 and TB-500 instead. A vendor that documents the parts properly is the closest thing to evidence about its blend that exists.
Vendors publishing a KLOW report are welcome to send it — we record blend reports as blend reports, with the content figures per component and the purity figure as the document states it, and never as 4 separate records.
Certificates for the parts
Questions this page answers
- What is in KLOW?
- KLOW is one vial holding KPV 10 mg + GHK-Cu 50 mg + BPC-157 10 mg + TB-500 10 mg, 80 mg of peptide in total. Smaller vials of the same blend keep the ratio: a 40 mg vial is the same split halved. 4 compounds, each with its own research record and its own certificates on this index.
- Is KLOW cheaper than buying the peptides separately?
- At the market median, 80 mg of KLOW costs $105 as a blend and $195 bought as 4 separate vials at each compound's median price per mg. 0 of the 13 vendors that sell both the blend and all of its parts charge more for the blend than for the parts.
- Can a laboratory certificate prove what is in a KLOW vial?
- Only partly. A blend report measures how many milligrams of each component the vial holds, which is the useful part, but it reports purity once for the mixture as a whole. There is no per-component purity to publish, so a blend certificate cannot be split into one record per peptide without asserting a figure no laboratory measured. PepIndex records blend reports as blend reports and judges a vendor's blend on the certificates it holds for the component peptides.