Chain of custody: difference between revisions
Diff·revision 20 → 21·17:38, 9 Jun 2025
Difference between revision 20 and revision 21 of Chain of custody. 11 lines changed; the page grew by 606 bytes.
| Revision 20 — 07:35, 24 May 2025 MolarMassMaeve (talk) add the citation for the blind-sampling discussion 4,102 bytes +17 | Revision 21 — 17:38, 9 Jun 2025 PrepHPLC_Pia (talk) add the laboratory accreditation status, or say plainly that it is not stated 4,708 bytes +606 | ||
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| 27 | The practical upshot is that uncontrolled-chain results are more informative when favourable than when unfavourable, which is the reverse of how they are usually read. | 27 | The practical upshot is that uncontrolled-chain results are more informative when favourable than when unfavourable, which is the reverse of how they are usually read. |
| 28 | 28 | ||
| + | 29 | == Approximations available in practice == | |
| + | 30 | Full custody documentation is not achievable for community testing, but several partial measures narrow the gap and appear in submissions to this wiki.{{r|reports}} | |
| + | 31 | ||
| + | 32 | | Measure | What it excludes | | |
| + | 33 | |---|---| | |
| + | 34 | | Analysis on receipt, unopened | Purchaser storage | | |
| + | 35 | | Temperature indicator in the shipment | Undocumented transit excursion | | |
| + | 36 | | Sending direct from supplier to laboratory | Purchaser handling entirely | | |
| + | 37 | | Photographing the sealed vial before dispatch | Substitution after receipt | | |
| + | 38 | | Retaining a second unit unopened | Allows re-analysis if disputed | | |
| + | 39 | ||
| 29 | == References == | 40 | == References == |
| 30 | {{reflist}} | 41 | {{reflist}} |