| 1,25-dihydroxyvitamin D3 | 1,25(OH)2D3 |
| 25-hydroxyvitamin D3 | 25(OH)D3 |
| α1-microglobulin | α1m |
| α2-macroglobulin | α2M |
| α2-plasmin inhibitor | α2PI |
| anti-centromere antibodies | ACA |
| anti-cardiolipin antibodies | aCL |
| acute cutaneous lupus erythematosus | acLE |
| anti-citrullinated protein antibodies | ACPA |
| American College of Rheumatology | ACR |
| anti-endothelial cell antibodies | AECA |
| Arthritis Foundation | AF |
| acquired immunodeficiency virus | AIDS |
| Arthritis Impact Measurement Scales | AIMS |
| alkaline phosphatase | ALP |
| anti-mitochondrial antibodies | AMA |
| anti-nuclear antibodies | ANA |
| anti-neutrophil cytoplasmic antibodies | ANCA |
| anti-phospholipid antibodies | aPL |
| IgA anti-phospholipid antibodies | APL |
| anti-phospholipid syndrome | APS |
| anti-phosphatidylserine-prothrombin antibodies | aPS-PT |
| anti-prothrombin antibodies | aPT |
| activated partial thromboplastin time | aPTT |
| American Rheumatism Association | ARA |
Arthritis, Rheumatism and Aging
Medical Information System | ARAMIS |
| adult respiratory distress syndrome | ARDS |
| acute rheumatic fever | ARF |
| ankylosing spondylitis | AS |
| acetylsalicylic acid | ASA |
| anti-smooth muscle antibodies | ASMA |
| azathioprine | AZA |
| Bath Ankylosing Spondylitis Disease Activity Index | BASDI |
| Bath Ankylosing Spondylitis Functional Index | BASFI |
| Bath Ankylosing Spondylitis Patient Global Score | BAS-G |
| Bath Ankylosing Spondylitis Metrology Index | BASMI |
| Bath Ankylosing Spondylitis Radiology Index | BASRI |
| British Isles Lupus Assessment Group | BILAG |
| bone mineral content | BMC |
| bone mineral density | BMD |
| body mass index | BMI |
| bone morphogenic protein | BMP |
| bovine serum albumin | BSA |
| Birmingham Vasculitis Activity Score | BVAS |
| cytoplasmic ANCA | cANCA |
| cyclic citrullinated peptide | CCP |
| chronic diffuse cutaneous lupus erythematosus | cdcLE |
| complementary DNA | cDNA |
| collagen-induced arthritis | CIA |
| circulating immune complex | CIC |
| counterimmunoelectrophoresis | CIE |
| carpometacarpal joint | CMC joint |
| cytomegalovirus | CMV |
| central nervous system | CNS |
| central nervous system lupus | CNS lupus |
| cartilage oligomeric matrix protein | COMP |
| calcium pyrophosphate deposition disease | CPDD |
| counts per minute | cpm |
| calcium pyrophosphate dihydrate | CPPD |
calcinosis, Raynaud's phenomenon, esophageal
dysmotility, sclerodactyly, telangiectasias | CREST |
| chromosomal RNA | cRNA |
| C-reactive protein | CRP |
| chondroitin sulfate | ChSu |
| corticosteroid | CS |
| cyclosporin A | CSA |
Cooperative Systematic Studies
of the Rheumatic Diseases (group) | CSSRD |
| computed tomography | CT |
| connective tissue disease | CTD |
| cathepsin G | CTG |
| carpal tunnel syndrome | CTS |
| coxsackievirus B | CVB |
| cyclophosphamide | CYC |
| dilute Russell viper venom time | DRVVT |
| disease activity score | DAS |
| diffuse cutaneous systemic sclerosis | dcSSc |
| denatured DNA | dDNA |
| D-penicillamine | D-Pen |
| dehydroepiandrosterone | DHEA |
| dehydroepiandrosterone sulfate | DHEAS |
| direct immunofluorescence | DIF |
| distal interphalangeal joint | DIP joint |
| diffuse idiopathic skeletal hyperostosis | DISH |
| discoid lupus erythematosus | DLE |
| dermatomyositis | DM |
| disease-modifying antirheumatic drugs | DMARD |
| Dulbecco's modified Eagle's medium | DMEM |
| deoxyribonucleic acid | DNA |
| dual-photon absorptiometry | DPA |
| double-stranded DNA | dsDNA |
| dual x-ray absorptiometry | DXA |
| Epstein-Barr nuclear antigen | EBNA |
| Epstein-Barr virus | EBV |
| electrocardiogram | ECG |
| European Consensus Lupus Activity Measure | ECLAM |
| ethylenediaminetetraacetic acid | EDTA |
| eosinophilic fasciitis | EF |
| enzyme immunoassay | EIA |
| enzyme-linked immunosorbent assay | ELISA |
| electron microscopy | EM |
| electromyography | EMG |
| extractable nuclear antigen | ENA |
| ear, nose, throat | ENT |
| erythrocyte sedimentation rate | ESR |
| European Spondylarthropathy Study Group | ESSG |
| endothelin 1 | ET-1 |
| European League Against Rheumatism | EULAR |
| fluorescence-activated cell sorting | FACS |
| fluorescence in situ hybridization | FISH |
| fluorescein isothiocyanate | FITC |
| fibromyalgia | FM |
| familial Mediterranean fever | FMF |
fast protein (or fast performance)
liquid chromatography | FPLC |
| Felty's syndrome | FS |
| fluorescent treponemal antibody absorption | FTA-ABS |
| glycosaminoglycan | GAG |
| glomerular basement membrane | GBM |
| giant cell arteritis | GCA |
| gas chromatography-mass spectrometry | GC-MS |
| granulocyte colony-stimulating factor | G-CSF |
| granulocyte-macrophage colony-stimulating factor | GM-CSF |
| glomerulonephritis | GN |
| IgG phospholipid units | GPL |
| hyaluronic acid | HA |
| Health Assessment Questionnaire | HAQ |
| heat-aggregated IgG | HAGG |
| hepatitis A virus | HAV |
| hepatitis B surface antigen | HBsAg |
| hepatitis B virus | HBV |
| hydroxychloroquine | HCQ |
| hepatitis C virus | HCV |
| hepatitis delta virus | HDV |
| hepatoma cell line | Hep |
| human epithelial cell line 2 | HEp-2 |
| hepatitis E virus | HEV |
| human herpesvirus | HHV |
| histidyl-transfer RNA | his-tRNA |
| human immunodeficiency virus | HIV |
| human leukocyte antigens | HLA |
| heterogeneous nuclear RNA | hnRNA |
| heterogeneous nuclear RNP | hnRNP |
| hypertrophic osteoarthropathy | HOA |
high pressure (or high performance)
liquid chromatography | HPLC |
| human papilloma virus | HPV |
| hormone replacement therapy | HRT |
| heat shock protein | HSP |
