CURATED VENDOR PROFILE
Hello Stacks
A Costa Mesa research storefront with public vial prices and lot certificates from Vanguard Laboratory and Freedom Diagnostics that a reader can check at those laboratories.
REFERRAL OFFER
20% off with disclosed code
Code BENCHMARK takes 20% off, confirmed at checkout October 1, 2026 (BPC-157 10 mg $49.00 → $39.20; HGH 24 IU $99.00 → $79.20). It does not apply to reconstitution solution or to StackOne pens already carrying the buy-one-get-one offer. Our referral link records the visit but does not apply the discount by itself. PeptideBenchmark earns a commission on referred orders; that is not an extra discount.
PeptideBenchmark has a disclosed affiliate relationship with Hello Stacks. This does not change benchmark scores or trust ratings — it only affects outbound links and pricing-board discount modeling where applicable.
Same formula for every vendor: verifiable testing evidence forms the backbone; third-party reviews adjust it within a bounded range. How scoring works →
Score breakdown
Rank Composition — the terms below are the published receipt for this score. Full formula on the methodology page.
- Verified-evidence backbone
- 6.40
- Third-party reviews (bounded)
- +0.00
- Curated review bonus
- +0.15
Hello Stacks publishes standing prices for lyophilized vials and for StackOne prefilled pens and refill cartridges. GLP-1 R, GLP-1 T, and GLP-1 S are the storefront codes for retatrutide, tirzepatide, and semaglutide. Vial certificates are Vanguard Laboratory PDFs under the Hello Stacks client name. StackOne pen and refill certificates are Freedom Diagnostics PDFs under the Stack One Labs client name. HGH is sold in IU. Reconstitution solution and the empty pen stay off the peptide board.
Readers comparing an openly priced U.S. catalog who want lot-level Vanguard Laboratory certificates on vials and Freedom Diagnostics certificates on the StackOne pen line.
GLP-1 R, GLP-1 T, and GLP-1 S are storefront codes for retatrutide, tirzepatide, and semaglutide. Prefilled pens and refill cartridges are not lyophilized vials and stay off the $/mg board. HGH is compared in IU. Several catalog products publish a price without a downloadable certificate, including GHK-Cu 100 mg and both GLP-1 S strengths. One public Vanguard MOTS-c 10 mg PDF is not in Vanguard’s current public database, and three StackOne Freedom search codes did not resolve at the laboratory on September 28, 2026. Reconstitution solution and the empty pen stay off the peptide board. That relationship does not change the September 28 evidence findings or the score.
Hello Stacks is operated by PranaCore Life Inc., 3330 Harbor Blvd., 2nd Floor, Costa Mesa, CA 92626; support@hellostacks.com; +1-307-206-2543. The storefront said orders placed by 2:00 PM PST ship the same day.
Checked September 28, 2026Public Vanguard and Freedom Diagnostics COAs with provider verification
Vial lots link a Vanguard Laboratory PDF. PeptideBenchmark checks the laboratory ID on that PDF against Vanguard’s public certificate database when the laboratory copy names Hello Stacks. StackOne pen and refill lots link a Freedom Diagnostics PDF. PeptideBenchmark checks the printed search code against Freedom’s copy when that copy names Stack One Labs. A matched certificate documents the tested sample and the panels printed on that document. It does not cover a product that has no certificate, and it is not a sterility or heavy-metals finding unless the document reports those assays.
8 public certificate examples
Representative product pages showing how this catalog exposes report or verification paths. Examples, not proof for every current lot.
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