Yes. Some seronegative RA is same as zero positive. Maybe they have IgA RF. #RWCS2020 @RheumNow https://t.co/MIZY4wXonE
Links:
Aruni Jayatilleke on Twitter: "Agreed but on the other hand, there’s a bun…
https://twitter.com/rheumed/status/1228442063622082566
Feb-15-2020
