Endotoxin undetectable means below the detection limit of on Medutest's system. That does not mean zero and may not reflect actual endotoxin. The cutoff is useful for screening; the absence of a number is not a guarantee.
disulfide_fold
Oxidative folding, scrambling, and why a correct mass proves nothing about pairing.
Section 1
Contribution
Both submits records and annotates other people's.
Records submitted
9
n=9
Annotations
1
n=1
Median purity submitted
99.35%
n=9
Suppliers covered
6
n=9
Section 2
Records submitted
A submitter chose to buy this material and to pay for this assay. That choice is the selection mechanism behind the whole index and it is not random.
| Report | Compound | Supplier | Lot | Lab | Quarter | Purity % | Water % | Recovery % | Provenance | Flags | Result |
|---|---|---|---|---|---|---|---|---|---|---|---|
| AX-2026-042819 | TB-500 | GGPeps | GGPE-2605-J2051 | PeptideMeter | 2026-Q2 | 99.70 | 4.70 | 94.5 | Supplier-supplied | 1 | MARGINAL |
| AX-2026-043496 | Leuprolide | WXT | WXT-2511-S5991 | Nordanalyt | 2026-Q1 | 97.47 | 5.56 | — | Laboratory-retained | 1 | FAIL |
| AX-2026-042881 | MK-677 (Ibutamoren mesylate) | GGPeps | GGPE-2509-T2530 | PeptideMeter | 2026-Q1 | 99.61 | 4.30 | 107.5 | Supplier-supplied | 0 | FAIL |
| AX-2025-021084 | Tirzepatide | WXT | WXT-2411-F4668 | Janoshik | 2025-Q2 | 98.85 | 4.34 | 103.8 | Supplier-supplied | 1 | MARGINAL |
| AX-2025-018649 | N-Acetyl Semax Amide | QYB | QYB-2411-G5768 | PeptideMeter | 2025-Q2 | 99.93 | 9.62 | — | Supplier-supplied | 0 | PASS |
| AX-2025-019745 | Tirzepatide | HJ | HJ-2502-P3591 | Janoshik | 2025-Q1 | 99.12 | 2.23 | 107.0 | Buyer-sourced | 2 | MARGINAL |
| AX-2024-004504 | L-Glutathione (reduced) | FGP | FGP-2405-E2221 | Janoshik | 2024-Q3 | 99.93 | 5.65 | — | Supplier-supplied | 2 | FAIL |
| AX-2024-004314 | Retatrutide | QYB | QYB-2312-K5632 | Medutest | 2024-Q2 | 98.86 | 5.56 | — | Supplier-supplied | 4 | MARGINAL |
| AX-2024-004348 | PT-141 (Bremelanotide) | QSC | QSC-2402-X7410 | PeptideMeter | 2024-Q1 | 99.35 | 2.82 | 95.5 | Supplier-supplied | 0 | PASS |
Section 3
Annotations
Signed technical comments on records. The index does not moderate annotations for agreement with its own arithmetic, and several of these disagree with it.