PM Scl 100

[Brychni]

Hello lovely peopleGot my blood results back from rheumatology today, they were looking for scleroderma because of my worsening Raynaud's and finger ulcers. Thankfully I tested negative for everything except the one in the title : PM Scl 100. Does anyone know what this means, if anything. To recap I am:

ANA positive

Anti phospholipid IgG positive

Permanently low platelets

Raynaud's

Undifferentiated Inflammatory arthritis, connective tissue and lupus (or so it says on my notes)

Thanks in advance.