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Buy KLOW (GHK-Cu, BPC-157, TB-500, KPV): Vendors and Prices Compared

Checked, not rated · Updated 3 October 2026

KLOW is not an approved medicine: it is a research blend of GHK-Cu, BPC-157, TB-500 and KPV, sold as one pre-mixed vial, labelled for research use only. 2 checked vendors sell it online (Next Level Pharm and BioEdge Research Labs), from $95.99 for a KLOW 80 mg blend vial as of 3 October 2026.

A vendor-mixed vial of four research peptides. No study has tested the four together.

The table compares vendors on FDA record, testing lab, batch COAs and price. Before buying from anyone, run my vendor checklist.

Components
GHK-Cu, BPC-157, TB-500, KPV
Form
One pre-mixed vial
Tested together
No

The evidence, risks and legal detail: my KLOW guide.

KLOW vendors compared

The checklist results come from my review of each vendor and cover the whole store. A vendor can publish COAs for some products and not others. The featured vendor is pinned first; the order is not a ranking.

Vendors selling KLOW for research use, compared on product, price, FDA record, testing lab, batch COAs and card payment
VendorProductPriceFDA recordNames its labBatch COAsCard paymentLink
Next Level PharmFeaturedMy Next Level Pharm reviewKLOW 80 mg blend vial (GHK-Cu 50 mg, BPC-157 10 mg, TB-500 10 mg, KPV 10 mg)$95.99as of 3 October 2026No warning letter foundYesYesYesView product →
BioEdge Research LabsMy BioEdge Research Labs reviewKLOW 80 mg blend vial (GHK-Cu 50 mg, BPC-157 10 mg, TB-500 10 mg, KPV 10 mg)$140.00as of 3 October 2026No warning letter foundYesYesNot verifiedView product →

Prices are for the product named, as shown on the vendor's own product page on the date given. They change often. Checklist results were verified on 3 October 2026. All vendors and how they compare.

What a KLOW COA should show

A certificate of analysis (COA) is the lab report for one batch. For KLOW, check these:

  • Identity by mass spectrometry for each peptide in the vial, with the expected and the measured mass of each: GHK-Cu about 402.92 Da, BPC-157 about 1,419.5 Da, TB-500 about 889 Da and KPV about 342.43 Da.
  • The amount of each peptide, matching the split on the label. One purity figure for the whole vial does not show the split.
  • "TB-500" is used for two molecules: the 7-amino-acid fragment (about 889 Da) and full-length thymosin beta-4. Check which one the COA reports.
  • Purity by HPLC for this batch, shown as a chromatogram as well as a percentage.
  • A lot number that matches your vial or pack, the test date and the lab's name, so you can confirm the certificate on the lab's own site.

A purity figure does not cover sterility or bacterial endotoxins; a COA covers those only if it reports separate tests for them. Line by line: how to read a peptide COA.

Red flags when buying KLOW

  • A blend label with no split, or a COA that reports one total for the whole vial.
  • Claims that the combination has been tested in people. No study has tested the four together.
  • No certificate of analysis for the batch you will receive, or one without a lot number or a named lab.
  • Dosing instructions or treatment claims for people on the product page.
  • An FDA warning letter naming the seller. Search fda.gov before you pay.
  • No way to pay with buyer protection, such as a credit card.

Common questions

Where can I buy KLOW?

Online, from research vendors that label it for laboratory use only. I list 2 checked vendors: Next Level Pharm and BioEdge Research Labs, from $95.99 for a KLOW 80 mg blend vial as of 3 October 2026. Before you pay, confirm the batch COA on the testing lab's own site.

Is KLOW for sale legally?

KLOW is sold in the US labelled for laboratory research use only. None of GHK-Cu, BPC-157, TB-500 and KPV is an FDA-approved drug, so no prescription or pharmacy version of the blend exists. Products sold this way cannot lawfully be marketed as a supplement or a medicine. This is general information, not legal advice.

What is in KLOW?

4 peptides: GHK-Cu, BPC-157, TB-500 and KPV, sold as one pre-mixed vial. The split depends on the vendor: Next Level Pharm, KLOW 80 mg blend vial (GHK-Cu 50 mg, BPC-157 10 mg, TB-500 10 mg, KPV 10 mg); BioEdge Research Labs, KLOW 80 mg blend vial (GHK-Cu 50 mg, BPC-157 10 mg, TB-500 10 mg, KPV 10 mg).

How much does KLOW cost?

On the vendors' own product pages: Next Level Pharm, KLOW 80 mg blend vial (GHK-Cu 50 mg, BPC-157 10 mg, TB-500 10 mg, KPV 10 mg), $95.99 (as of 3 October 2026); BioEdge Research Labs, KLOW 80 mg blend vial (GHK-Cu 50 mg, BPC-157 10 mg, TB-500 10 mg, KPV 10 mg), $140.00 (as of 3 October 2026). Prices change often, so check the product page before you rely on one.

Has KLOW been tested?

No. A vendor-mixed vial of four research peptides. No study has tested the four together.

Who sells the best KLOW?

I don't rank vendors, so I don't name a best one. Compare what each lets you check: a named testing lab, a COA for your lot that the lab confirms on its own site, and no FDA warning letter. The table shows my checklist result for each vendor. A vendor that passes every check can still ship a bad batch.

Sources

  • Vendor checks: my review of each vendor, on the date shown under the table. Products and prices: each vendor's own product page.
  • What the stack is and what has tested it: my KLOW guide, which cites its sources.