GA	Gouty arthritis
AGA	Acute gouty arthritis
UPLC–Q–TOF/MS	Ultra-high-performance liquid chromatography–tandem quadrupole/time-of-flight mass spectrometry
PCA	Principal component analysis
PLS-DA	partial least square discrimination analysis
SUCs	Sodium urate crystals
SUA	Serum uric acid
TCM	Traditional Chinese medicine
ELISA	Enzyme–linked immunosorbent assay
QC	Quality control
BPI	base peak intensity
ROC	receiver operating characteristic
PCS	p–cresol sulfate
GPH	Gout Party high–dose group
GPL	Gout Party low–dose group
VIP	Variable importance in projection