Jun 8, 2026 at 4:59 PM#6
I've been tracking vendor purity results in a spreadsheet. Here's how WWB stacks up against what others have posted:
| Vendor | Avg Purity (Sema) | Samples | Range |
|--------|------------------|---------|-------|
| WWB | 99.07% | 3 | 98.7-99.4% |
| QSC | 98.6% | 12 | 97.1-99.8% |
| Amo | 98.9% | 5 | 98.2-99.5% |
| PepSci | 97.8% | 4 | 97.0-98.5% |
WWB has the tightest range which suggests better batch-to-batch QC. Small sample size caveat of course.
21 16hyun_seoul, jim_asheville, matt_MKE and 18 others
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Jun 8, 2026 at 5:47 PM#7
That table is gold, Dr.PeteFamMed. 📊 The tight range on WWB is impressive. QSC having that wide of a spread (97.1-99.8) is a bit concerning — though 12 samples gives a more complete picture.
— any issues at customs? I'm in a state that's been cracking down on peptide imports lately.
Last edited: Jun 8, 2026 at 11:47 PM
20 15InsuranceTom, WendyG_ATL, SaraMom3 and 17 others
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Jun 8, 2026 at 6:35 PM#8
Zero customs issues across all 3 orders. They ship via a freight forwarding setup — the outer package is labeled as "biochemical research reagents" with proper documentation. Nothing sketchy looking.
Two of mine came via USPS after the international leg, one came via FedEx. I didn't get to choose — they route based on what's moving fastest apparently.
Last edited: Jun 9, 2026 at 12:35 AM
19 14Dr.LipidDallas, alex_tucson, kevin_tulsa and 16 others
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View ResultsJun 8, 2026 at 7:23 PM#9
That tirz number at 98.4% is decent but a bit lower than what I've been getting from my vendor (99.0-99.3%). Could be within normal variance though. How did the tirz perform subjectively? Appetite suppression, nausea profile, etc?
I might add a WWB tirz order to my next sema restock for comparison.
18 13SandraNC_45, Dr.EndoIndy, tom_AK and 15 others
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Jun 8, 2026 at 11:16 PM#10
Tirz performed exactly as expected — strong appetite suppression kicking in around 24-48 hours post-injection, mild nausea at 5mg dose that subsided by day 3. Comparable to pharma Mounjaro I had a sample of previously.
The 98.4% purity is on the lower end of what I'd want but still well within acceptable range. I'd need more data points to know if that's typical for their tirz or just that batch.
Planning order #4 for next month — probably 30 sema + 10 tirz again. Happy to test and report back. 👍
14 12kevin_tulsa, Dr.PainCLE, mike_mealprep and 11 others
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