Table 1.

Analytical methods and platforms

Method	SOP	OTHER
MS platform	QQQ/QTRAP	QQQ/QTRAP	QTOF	Orbitrap
Number Datasets	23 (23 RP)	10 (8 RP, 2 FIA)	3 (2 RP, 1 SFC)	3 (2 RP, 1 FIA)
Sum	23	16

SOP refers to the method recommended by the study authors, OTHER to methods chosen by the individual laboratories. The number in brackets indicates the number for each chromatographic/injection method (RP Reversed Phase, FIA Flow Injection Analysis, SFC Supercritical Fluid Chromatography). Other variations present in OTHER may include type of extraction, nano/capLC, LC duration (7–50 min), column chemistries and MS source settings. Platforms: QQQ = triple quadrupole, QTRAP = ion trap, QTOF = quadrupole time-of-flight.