TitrateLab/Vendors/QST
▸ Vendor trust profile
QST: Independent Lab Review (71 COAs Tested)
Lab-verified evidenceQingdao Saber Technology Pharma Qst
An independent, evidence-first review of QST (Qingdao Saber Technology Pharma Qst) — wondering if QST is legit? Every number below is sourced from 71 third-party lab certificates of analysis, not vendor marketing. The headline trust stats are free; the batch-by-batch evidence, every certificate, pricing & stock are TitrateLab Pro.
Average purity
mean across 58 assayed batches
⚠ 1 batch underdosed — worst -15% vs labeled dose
Purity distribution
58 batches · ProCOAs tracked
71
third-party certs
In-spec rate
98%
1 underdosed · worst -15%
Compounds
13
distinct peptides
Coverage
2023-12 → 2026-04
first → latest test
The batch-by-batch distribution is a Pro feature
See every one of QST's 58 assayed batches plotted by purity around the 99.6% average — the real per-batch readings behind the headline stats.
Go Pro — $9/mo or $33 lifetimeCompounds tested
13 distinctPeptides with at least one tracked certificate from this vendor. Tap a linked compound for the full research hub.
Recent certificates
71 total · showing 2A sample of the most recently tested batches. Each links to its full, public certificate page — purity, method, lab, and test date.
Inline purity on every batch is a Pro feature
The full certificate list below is free. Pro reads the measured purity, method, lab, and test date inline on every one of the 71 third-party batches TitrateLab tracks for QST — plus the batch-by-batch distribution and per-compound breakdown.
Go Pro — $9/mo or $33 lifetimeAll certificates
71 third-party COAsEvery third-party certificate of analysis TitrateLab tracks for QST, grouped by compound. Each links to its full, public certificate page — purity, method, lab, and test date on each.
Show all 17
Per-compound purity
mean purity by peptide · ProAverage assayed purity for each of 13 compounds — the batch-level breakdown behind the headline average. Tap the tile to unlock with Pro.
Per-compound purity is a Pro feature
See QST's average assayed purity for each of its 13 compounds — the batch-level breakdown behind the headline 99.6% average.
Go Pro — $9/mo or $33 lifetimeCommunity reviews
Pro-member sourcedUnlock QST's full lab evidence
The trust teaser above and the full certificate list are free & always will be. Unlock every batch's purity inline across all 71 certificates, the batch-by-batch purity distribution, the per-compound breakdown, plus live pricing, stock & the full Pro review thread.
Instant access · cancel anytime · no pay-to-rank, ever
Frequently asked
purity & lab evidenceIs QST legit?
TitrateLab tracks 71 third-party lab certificates of analysis for QST, averaging 99.6% tested purity across 58 assayed batches, with 98% of those batches in spec on both purity (≥90%) and labeled dose (filled to within 10% of the labeled amount); 1 assayed batch was significantly underdosed (worst -15% vs the labeled amount) (tests dated 2023-12-11 to 2026-04-23). These are purity analytics from independent certificates, not vendor marketing — TitrateLab does not rank or endorse vendors, and this is research-use-only information, not a recommendation to purchase or use any product.
What is QST's average tested purity?
Across the 58 assayed batches TitrateLab tracks for QST, the mean third-party-tested purity is 99.6%. Purity is measured on the specific batches that were submitted for analysis and is not a guarantee for any other lot.
How many lab certificates does TitrateLab track for QST?
TitrateLab tracks 71 published third-party certificates of analysis for QST spanning 13 distinct compounds. Each certificate links to its own public page with the purity, test method, issuing lab, and test date.
What share of QST's tested batches are in spec on purity and dose?
98% of the 58 assayed batches TitrateLab tracks for QST (57 of 58) were in spec on BOTH tested purity (at or above 90%) and labeled dose (filled to within 10% of the labeled amount). 1 assayed batch was significantly underdosed against the label (worst -15%), so they are counted as out of spec even where tested purity was high. This reflects only the batches that were tested and is analytic information for research use, not a quality guarantee for any order.
Answers are derived from the third-party lab certificates TitrateLab tracks for this vendor and describe tested purity only. This is research-use-only information, not medical advice and not a recommendation to purchase or use any product.
How this is sourced. TitrateLab tracks certificates of analysis posted by the community and verified against the issuing lab. Purity, test dates, and compound names shown here are the same facts published on each public certificate page — aggregated, never edited. The in-spec rate counts a batch only when it clears both purity (≥90%) and labeled dose (filled to within 10% of label, where dose data exists); it reflects the batches that were tested and is not a guarantee of every order. Scores come only from lab data — no vendor pays for placement, and customer orders or Pro never move a grade. Browse the COA corpus →