Referral criteria and eligibility | Suspected condition | Investigations | Additional considerations |
| Inflammatory arthritis | CBC, ESR, CRP, albumin, ALT, GGT, creatinine, ferritin, LDH, urate, IgGAM, anti-TTG, TSH, anti-nuclear antibody (ANA), Rheumatoid factor (RF), anti-cyclic citrullinated peptide (CCP), HLA B27 | -Consider lyme serology if endemic area, monoarthritis, intermittent arthritis. -Consider targeted joint imaging |
| Systemic rheumatic disease (e.g. systemic lupus erythematosus, juvenile dermatomyositis, vasculitis) | CBC, ESR, CRP, albumin, ALT, AST, GGT, creatinine, ferritin, CK, LDH, urate, C3, C4, IgGAM, anti-TTG, TSH, anti-nuclear antibody (ANA), extractable nuclear antigens (ENA), anti-dsDNA, anti-neutrophil cytoplasmic antibody (ANCA), urinalysis, urine protein:creatinine ratio | N/A |
| Raynaud’s phenomenon | N/A | Encourage patient to take photos of extremity changes |
| Recurrent fevers | N/A | Encourage family to keep diary of fevers and symptoms |
Other information
Mandatory for Triage:
Please report relevant findings on the patient’s physical examination. If the referral is for MSK pain, include joint or muscle examination and impact on function.
Please attach all relevant investigations. See required laboratory investigations above.
Additional Considerations:
If you require urgent advice, you may page the CHEO rheumatologist on-call at 613-737-7600 ext 0 or send an eConsult via OTNhub or Champlain BASE eConsult.
Please consider sending an eConsult if you are unsure whether a rheumatology referral is warranted.