Fig. 7

Diagnostic potency of γ-butylbetaine (GBB) and l-carnitine (L-CN) in the plasma and urine for different periods of deep vein thrombosis (DVT). (a–c) Receiver operating characteristic (ROC) curves of GBB, L-CN, D-dimer, and their combination in plasma of the acute, subacute, and chronic groups. (d–f) ROC curves of GBB, L-CN, and their combination in urine of the acute, subacute, and chronic groups. ***P < 0.001, **P < 0.01, *P < 0.05.