C3 and C4⬆️in SLE pregnancy like they would in pregnancies w/o SLE! French GR2 prospective study of 290 SLE pregnancies quantifies mean C3 value⬆️by 28%, C4⬆️by 11% from 1st ➡️3rd trimester. Remember this when assessing disease activity. #EULAR2021 Abstr #0103 @rheumnow https://t.co/TXjO4mjNJE