No anti-sm(lupus)? Yes, anti dsDNA is for SLE(lupus). No ENA panel,anti-RNP, anti-SS-A, anti-SS-B, anti histone, scl-70, etc? I'd ask for a referral, if you feel that there is something going on. I think that would be a logical step because of the positive ANA and lack of investigation. 1:640 is definitely positive.