GL Biochem
GL Biochem (Shanghai) Ltd.
Shanghai, Shanghai · China · est. 1998 · source page added 25 Aug 2023
The synthesis house rather than the shop. Founded 1998, ISO 9001 and cGMP, 1,500+ staff, 200+ patents. Fair chance that a vial you bought from someone else started here. Ordering as an individual is possible but the process assumes you are a purchasing department, not a hobbyist.
- Legal name
- GL Biochem (Shanghai) Ltd.
- Short code
- GL Biochem
- Also known as
- GL Biochem, GLS
- Shop domain
- glbiochem.net →
- City
- Shanghai, Shanghai
- Established
- 1998
- Community rating
- 94%
- Independent tests logged
- 4
Regional stock, so orders ship inside the buyer’s own country.
- Netherlands (Rotterdam) — European Union, 2-4 days
- Germany (Hamburg) — Germany, Austria, Switzerland, 2-4 days
- United Kingdom (London) — United Kingdom & Ireland, 2-3 days
- United States (California) — United States, 2-4 days
- Canada (Toronto) — Canada, 3-5 days
- Australia (Melbourne) — Australia & New Zealand, 3-5 days
- Genuine large-scale manufacturer with real certifications and patent estate
- Amino acids and resins alongside peptides — useful if you synthesise
- Batch-specific COA as standard, not on request
- Minimum quantities and paperwork are built for institutional buyers
- Not a consumer shop. If you want a single 5mg vial in three days this is the wrong door.
| Date | Service | Compound | Batch | Claimed | Result |
|---|---|---|---|---|---|
| 2026-02-12 | Janoshik | Semaglutide raw | GLS-2602 | 99.0% | 99.3% |
| 2025-09-23 | PeptideMeter | Tirzepatide raw | GLS-2509 | 98.5% | 98.9% |
| 2025-03-04 | Janoshik | BPC-157 raw | GLS-2503 | 99.0% | 99.1% |
| 2024-06-19 | Medutest | Semaglutide raw | GLS-2406 | 99.0% | 98.8% |
| From | To | Carrier | Days |
|---|---|---|---|
| Shanghai | EU | DHL | 6–9 |
- 1[Vendor] WXT order #5 — the Netherlands, 35 days, no drama, receipts insidec/coa · 15k points · 34 comments
- 211 months in and testing is still the thing I get wrongc/vendorvetting · 14k points · 26 comments
- 3what changed for me between week 40 and week 89c/coa · 14k points · 58 comments
- 4related substances — my 21-week log, condensed into one tablec/coa · 13k points · 45 comments
- 5stalled for 23 weeks at 5mg and I refuse to panic this timec/coa · 13k points · 63 comments
- 6[Lab] 20th independent test on QSC, and the trend is the interesting partc/vendorvetting · 13k points · 44 comments
- 7area percent — my 20-week log, condensed into one tablec/coa · 11k points · 58 comments
- 8Medutest — 17 things I got wrong before I got it rightc/vendorvetting · 11k points · 58 comments
- 9[Lab] GL Biochem raw material vs a reseller vial of nominally the same compoundc/coa · 441 points · 13 comments
- 10[Janoshik] GL Biochem raw material vs a reseller vial of the same compoundc/labresults · 118 points · 8 comments
Straightforward order, arrived as described, documentation adequate and complete. Nothing to add, which is the point.
One of the few places that will quote GHRP-2 5 mg at all, and the synthesis came back clean on an independent check.
Consistent rather than flashy. Everything lands in the high nineties, and it lands there every time.
Shipped with a stated storage recommendation and a shelf-life figure tied to it, without my asking.
Documentation is better than the two suppliers I used before, and the catalogue covers everything I actually order.
Quoted 4 days, arrived in 4. Tracking updated at every hop from dispatch to door.
PeptideMeter has now seen 9 of their lots through me. Not one has come back outside spec.
Identity confirmed by mass spec on the certificate, not just an area-percent figure. Both questions answered on one page.
9 lots logged now, purity 99.0 to 99.0%. A band that tight is worth more to me than one spectacular number.
Domestic dispatch from their stock in Canada. Straightforward, day 4, exactly as quoted.
Moved here after two bad lots elsewhere. 4 orders in and the Janoshik numbers have been flat every single time.
Everything about the order was routine in the best sense — quoted 5 days, arrived in 4.
Custom synthesis quote came back with a realistic timeline and they beat it. Purity on delivery matched the signed spec.
Shipped from their warehouse in the United States, arrived day 4, documentation complete.
Every certificate I have from them is lot-specific. Not one batch-level document in 4 orders.
Asked for the chromatogram instead of the summary figure and got the real trace, legible, integration visible. They send it without hesitating.
Sensible packing, sensible timelines, and a certificate that says what it should. No notes.
No customs paperwork, no import wait — it came from their stock in Germany and arrived day 2.
9 orders in eighteen months, no substitutions, no reformulations, everything in stock when the site said it was. Boring is the highest compliment I have.
Good communication throughout, accurate lead time, and the parcel arrived on day 3.
Reconstituted the hexarelin 5 mg and it went clear on contact — no haze, no floaters, no long swirl. Tells you the lyophilisation was done properly.
Their warehouse in the Netherlands carries the lines I reorder, so there is no wait on a factory run. Day 4 every time.
Documentation is complete and the numbers are steady. A dependable choice for routine work.
The ipamorelin 5 mg arrived on day 2 with the cold pack intact and the seal unbroken. Straightforward, exactly as described.
First order, deliberately small, mazdutide 5 mg only. Documentation, transit and a PeptideMeter result at 98.4% all checked out, so the next one will not be small.
Cold pack was still hard on arrival in Hamburg on day 4. My logger never went above 4°C across the whole run.