IPPC Diagnostic Protocols are developed to allow general use by competent diagnosticians in a laboratory performing pest diagnosis as part of phytosanitary measures. The methods described in DPs provide the minimum requirements for reliable diagnosis of the specified regulated pests and include information on the specificity, sensitivity, and reproducibility of these methods, where available.
Methods providing other levels of specificity, sensitivity, and reproducibility are also included where appropriate.
DPs usually describe more than one method to take into account the capabilities of laboratories and the situations in which the methods are applied. They provide guidance, but NPPOs should determine which methods are appropriate for their circumstances.
Once adopted, DPs will be reviewed regularly by the TPDP and updated to take into account advances in diagnostic methods CPM-4 (2009).
Authors work in liaison with the member of the TPDP in charge of the respective topic to develop draft DPs as annexes to ISPM 27 (Diagnostic Protocols for Regulated Pests). Currently, there are 33 adopted DPs, these can be found on the adopted standards page.
The work associated with authoring the DP will primarily take place through e-mail discussions, although teleconferences can be organized if necessary. Authors should be able to allocate appropriate time to draft the DP. Several experts may be selected to work together on a draft DP. English is the working language of the drafting group.
For more information on what is involved in authoring DPs and the time commitment necessary, please check out our brochure Introduction for authors of IPPC Diagnostic Protocols. It is important to know that:

| Title | Files | Publications date |
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| TPDP Instructions to Authors of Diagnostic Protocols |
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| IPPC Style guide |
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| TPDP working procedures |
Link |
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| Nominee details and summary of expertise | En | 26 Nov 2024 |
| STATEMENT OF COMMITMENT | En Es Fr | 26 Nov 2024 |