Low pre🤰c3/c4 levels assoc'd w/ ⬆ risk of adverse obstetric outcomes in women w/ aPL w/or w/o APS. Pts w/ triple+ aPL and ⬇ c3/c4 predicts a worse prognosis. @RheumNow #ACR20 https://t.co/Cd2TQBfXSe