The GUT CLUB, 15 Jul 2022 "Importantly, C4d levels can predict impending flares of lupus nephritis and may thus be useful for informing treatment." (2017…
Rheum Now, 13 Dec 2017 C4d may be useful in monitoring SLE. C4d PPV 68% for high Dz activty, correlates w/ SLEDAI w/ higer Dz activity