Editing Decompression sickness (section)

===Test of pressure===
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There is no [[Gold standard (test)#In medicine|gold standard]] for diagnosis, and DCI experts are rare. Most of the chambers open to treatment of recreational divers and reporting to Diver's Alert Network see fewer than 10 cases per year, making it difficult for the attending doctors to develop experience in diagnosis. A method used by commercial diving supervisors when considering whether to recompress as first aid when they have a chamber on site, is known as the ''test of pressure''. The diver is checked for contraindications to recompression, and if none are present, recompressed. If the symptoms resolve or reduce during recompression, it is considered likely that a treatment schedule will be effective. The test is not entirely reliable, and both false positives and false negatives are possible, however in the commercial diving environment it is often considered worth treating when there is doubt,<ref name="Freiberger et al 2005" /> and very early recompression has a history of very high success rates and reduced number of treatments needed for complete resolution and minimal sequelae.<ref name="Doolette and Mitchell 2018" /><ref name="Mitchell et al 2018" />