Temperature excursion: difference between revisions
Diff·revision 26 → 27·03:43, 22 Feb 2026
Difference between revision 26 and revision 27 of Temperature excursion. 2 lines changed; the page grew by 622 bytes.
| Revision 26 — 06:45, 9 Feb 2026 SecondarySrc_Seb (talk) rm the blanket claim that excursions are harmless 24,017 bytes ±0 | Revision 27 — 03:43, 22 Feb 2026 ResinRhoswen (talk) de-orphan 24,639 bytes +622 | ||
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| 151 | Recipient observation is weaker than it appears. Community reports that material used after warm transit produced no noticeable difference in effect suffer from a specific set of defects: no pre-exposure analytical baseline, so any deficit cannot be attributed to transit; no measurement of the exposure, so the reported condition is a guess; no blinding, and a subjective endpoint; and survivorship, since material that was visibly ruined is discarded rather than reported. The absence of a noticed difference is also a low-sensitivity endpoint — a 15% loss of active peptide is unlikely to be perceptible and would be a serious analytical finding.{{r|ppexcursion}} | 151 | Recipient observation is weaker than it appears. Community reports that material used after warm transit produced no noticeable difference in effect suffer from a specific set of defects: no pre-exposure analytical baseline, so any deficit cannot be attributed to transit; no measurement of the exposure, so the reported condition is a guess; no blinding, and a subjective endpoint; and survivorship, since material that was visibly ruined is discarded rather than reported. The absence of a noticed difference is also a low-sensitivity endpoint — a 15% loss of active peptide is unlikely to be perceptible and would be a serious analytical finding.{{r|ppexcursion}} |
| 152 | 152 | ||
| + | 153 | Analytical testing of a post-transit sample by a [[Third-party testing|third-party laboratory]] is a genuine improvement, and gives a purity figure with a real detection limit. It nonetheless cannot attribute a deficit to transit without a matched pre-transit result on the same lot, because manufacturing variability and transit degradation are indistinguishable in a single measurement. Where a vendor's own [[Certificate of analysis|certificate of analysis]] exists for the lot, the comparison is closer to informative, subject to the certificate being genuine and the sample being from the same lot.{{r|ppexcursion}} | |
| + | 154 | ||
| 153 | == References == | 155 | == References == |
| 154 | {{reflist}} | 156 | {{reflist}} |