Where to Buy KLOW and GLOW Blends in the USA

This page is a buying guide for US laboratories sourcing the KLOW and GLOW multi-peptide blends as research material, and it is not a product listing. It breaks each vial down by component, explains how to read the milligram figure on a blend label, sets out what a blend certificate has to establish, works the USD cost per milligram for both blends, and compares a FedEx parcel from Utah with an import.

What goes into each vial

KLOW and GLOW share three components and differ by a fourth.

GHK-Cu is the bulk of either vial, 50 of the 70 or 80 milligrams. Both blends are supplied as lyophilized research material; KLOW 80 mg is in stock and GLOW 70 mg is out of stock as this is written. The KLOW peptide blend: components and research takes the four constituents in turn, GLOW peptide blend composition analysis covers the three-component vial, GLOW vs KLOW puts the two side by side, and the KLOW USA hub links the rest.

Reading the milligrams on a blend label

The number on a single-peptide vial is the gross weight of one compound. The number on a blend vial is a sum: KLOW’s 80 mg is 10 + 10 + 50 + 10, and reading it as 80 mg of BPC-157 overstates that component eightfold. The gross-to-net correction is then made component by component, since each constituent brings its own counter-ion (usually TFA) and residual water, and the typical 70–90% net content applies to each one’s share rather than to the vial total. A set quantity of one constituent is worked from that constituent’s milligrams, not the headline figure. Multi-peptide blend vials: purity and composition explains why one purity percentage for a mixture hides more than it shows, and net peptide content explained covers the measurement for any vial.

What a blend certificate has to establish

A KLOW certificate has four identities to confirm and a GLOW certificate three. Mass spectrometry should show each on its own: an observed mass near 1,419.5 for BPC-157, near 889 for TB-500, near 402.9 for GHK-Cu and, in KLOW, near 342.4 for KPV. A single HPLC purity figure is of limited use for a mixture; a blend report should instead give the composition, meaning how the chromatogram divides between the components, with the column, gradient and detection wavelength beside it. The laboratory should be named, the method section present and the batch photographs published, because no printed lot number appears on our vials and a report is tied to a vial by cap color and crimp color against those photographs.

The one published report that bears on these blends is for the KPV component: ILS Laboratories COA-2026-DV7ZIB, for KPV 10 mg, at 99.24% purity. It covers a tested lot of KPV on its own: not a KLOW vial, not GLOW, and not the lot of either blend shipping on any given day. Further reports reach the certificates page as they return from testing. KPV tripeptide identity analysis explains what a laboratory can resolve on a 342 Da molecule.

Cost per milligram in USD

exolabz.co list prices on 28 October 2026; the 10+ columns use the cart’s 25% tier. GLOW 70 mg is out of stock as this is written, and its product page shows a “Notify me” box that sends an email on relisting; its row is kept for comparison.

Both blends list at $121.99, so the $0.22 gap per milligram between them is entirely the 10 mg of KPV that KLOW carries and GLOW does not. Because GHK-Cu is five-eighths of KLOW and five-sevenths of GLOW by label weight, a blend’s per-milligram figure mostly prices GHK-Cu and is not comparable with the figure for a single-peptide BPC-157 or TB-500 vial. Our US price list gives the figure for every vial in the catalog, and comparing research peptide prices per milligram marks out where the comparison holds.

A US vendor against an import

We dispatch from our facility in Utah as a tracked FedEx Express domestic parcel in plain-label packaging, to US addresses only: all fifty states, Alaska and Hawaii included, plus Puerto Rico. The parcel stays inside the country, so customs paperwork, duty and brokerage charges do not arise. Dispatch is usually within one business day of confirmation; orders after the day’s cut-off go with the next run, and late Friday orders go on Monday. Typical transit from dispatch is 1–2 business days to the Mountain and Pacific states, 2–3 to the Midwest, Texas and the South, 3–4 to the Northeast and New England, and longer to Alaska and Hawaii; none of it is guaranteed. Shipping is free on orders over $200 USD. One blend vial at $121.99 is below the line and pays the rate calculated at checkout; two vials at the 5% tier come to 2 × $115.89 = $231.78 and ship free. See where we ship and the shipping policy.

A blend vial imported from abroad adds a currency conversion at your card’s rate, an international shipping charge, and a parcel that can be held for inspection on entry. Importing research chemicals into the US vs ordering domestically compares the two routes.

Payment

exolabz.co accepts credit card and cryptocurrency at the same price, with no discount on one and no surcharge on the other. The payment methods page sets out each procedure.

Quantity tiers on the blends

Tiers are applied by the cart without a code and count every vial, blend or single. One price column serves both blends; the last two columns show what each tier does to the cost per milligram.

A first-order or win-back code from our emails is added on top of the tier. A holiday code at 30% off list takes the place of quantity pricing while applied instead of stacking with it. Past ten vials, the bulk orders page handles quotes.

Storage on arrival and the first week

Blend vials travel as lyophilized powder with no cold-chain, because the powder holds up over a normal transit. On delivery the sealed vial goes to 2–8 °C, protected from light and moisture, and it should warm to room temperature before being opened for the first time so that air moisture does not settle on cold powder. The first 7 calendar days are for checking the order: vial count against the packing slip, cap and crimp colors against the batch photographs on the report you mean to cite, and each vial inspected for cracked glass or a loose crimp. A damaged or incorrect item reported inside that window with photographs is replaced or refunded under the refund and returns policy; receiving a research peptide shipment gives the full checklist.

Five questions for any blend vendor

1. Is the composition stated in milligrams per component, or only as a total that could be split any way at all?
2. Does the certificate show a separate observed mass for each component, and does it name the laboratory?
3. Are the HPLC settings printed, and is the chromatogram broken down by component rather than summed into one number?
4. Can the vial be matched to its report, through a printed lot number or batch photographs?
5. If your own independent test comes in below the certificate’s specification, what then? Our purity guarantee refunds the product and the testing fee when the unused material is sent back with the lab report.

Choosing a research peptide supplier in the USA expands each point, and how to read a peptide certificate of analysis shows the second and third answered on a real report.

Product pages and the hub

KLOW Peptide Blend 80 mg is in stock; GLOW Peptide Blend 70 mg carries a “Notify me” box that will email you on relisting. The KLOW USA hub collects our writing on the blend and what goes into it, the FAQ covers ordering, and the contact page is there for anything else.

All products are sold for laboratory research use only and are not for human or animal use.