Research peptide comparison coverage: 90 of 241 packages had multiple current suppliers

A comparison website can list many products while offering relatively few choices for the exact package a researcher needs. Counting product names alone hides that difference. This report separates catalogue breadth, recorded offers and the number of current suppliers for a matching compound, package, form, market and currency. [1][3]

The recorded coverage, in one dated snapshot

The three supplier-count groups are mutually exclusive and add to 241. A group exists because at least one exact offer was recorded, even when none of its offers qualified as current and in stock at retrieval. A group with no qualifying offer is a coverage limitation; it does not prove that the compound is unavailable elsewhere.

Download the retained 506-row JSON snapshot and calculation rules

What counts as the same package

Each group uses five fields: catalogue product identity, labelled package size, physical form, original-currency market and currency. A 10mg vial is separate from a 30mg vial. A vial, capsule package and spray are separate forms even when they share a compound name. Blend component amounts remain in the size field rather than being replaced by a combined mass. [3][1]

Supplier counts use distinct supplier identifiers. Multiple records from one supplier cannot turn one seller into two choices. The calculation does not convert currencies or infer an amount that was missing from the original listing. It also does not compare different compounds as substitutes.

Read the price-per-mg and package-quantity method

Which offers qualified as current and in stock

An offer qualified only when its source timestamp was valid, no more than seven days before retrieval and no more than five minutes in the future; it was not marked stale; its recorded stock was in; and its price was a finite positive number. Stock, source age and a valid price are separate checks. All must hold for the supplier to count. [1][2]

The retained feed marked 110 offers stale: 63 from Amino Club, 37 from Blank Peptides and 10 across other suppliers. Those are unconfirmed observations for current-comparison purposes. They are not findings about a supplier’s quality, its business status or whether it has stock outside the records available here. A scheduled refresh also does not prove that every supplier source was successfully checked.

The download retains each offer’s source URL, source method, observation time, stock, price and stale flag so the exclusions can be examined. It records the retrieved feed’s generation time and a SHA-256 hash of the source response. The report is not recalculated from later prices when someone opens this page.

What this snapshot cannot establish

PeptideTech’s directory is a selected supplier set with disclosed affiliate relationships. These counts are not a survey of every supplier or the entire research-peptide market. They do not establish that the lowest recorded price is universally cheapest. Product prices can exclude shipping, tax and checkout conditions, and an offer recorded as in stock is not a reservation. [3]

No order, delivery test or independent sampling was performed for this report. Catalogue inclusion, a source link and a certificate reference do not authenticate a supplied batch or establish product safety or effectiveness. Research listings are not medical-use recommendations.

One snapshot cannot substantiate a price trend, a monthly change or a coverage-growth claim. Such a claim would require comparable retained observations from another stated time and the same inclusion rules. This report does not interpolate missing days or manufacture historical observations.

Use current pages for a new comparison

The snapshot remains fixed. Current product pages can contain later observations, different stock and a different number of suppliers. Select the exact package and form, read each source date, then confirm the option and delivered total with the supplier. Keep a current comparison separate from this historical report.

Compare current retatrutide packages and source dates

Compare current BPC-157 package offers

Compare current GHK-Cu package offers

Inspect current source coverage and refresh status

How to reproduce or cite the result

Use the retained download rather than the changing live feed. Group its offers by the five declared fields, apply the documented date, stale, stock and price conditions, count distinct supplier identifiers in each group, and count groups with zero, one or two-plus suppliers. The repository’s verify-comparison-coverage script performs the same calculation without fetching new supplier data.

A citation should identify PeptideTech, this report, the 1 November 2026 snapshot in America/Chicago, its UTC retrieval timestamp and the retained download. State that the figures concern directory coverage. If a later analysis changes the supplier set, time window or inclusion rules, publish those differences rather than treating its counts as directly comparable.

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