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. 2022 Feb 17;51:102271. doi: 10.1016/j.redox.2022.102271

Fig. 1.

Fig. 1

Causes of Abnormal Serum Uric Acid (SUA). Both causes of abnormal high level of serum uric acid (hyperuricemia) and low level of serum uric acid level (hypouricemia) have primary and secondary etiologies as listed. The main cause of secondary hypouricemia is following uric acid lowering treatment (ULT).