Antigens & Antibodies

diarect™ Antigens & Antibodies

As the exclusive North American representative of DIARECT™ products, Surmodics offers a comprehensive panel of autoimmune disease, infectious disease, allergy antigens and antibodies that provide outstanding assay performance for in vitro diagnostics applications. DIARECT™ antigens are for further manufacturing or research use only.

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Quality, Sensitivity and Lot-to-Lot Consistency

DIARECT™ recombinant and native antigens have a proven track record for quality and sensitivity in ELISA, Western Blot and lateral flow applications. The lot-to-lot consistency of DIARECT™ antigens reduces development time and increases productivity of immunoassay developers.

The antigens are produced under an ISO 13485:2016 Certified Quality System.


  • Systemic Autoimmune Rheumatic Diseases (SARD)
  • Mixed Connective Tissue Disease
  • Systemic Lupus Erythematosus
  • Sjøgrens Syndrome
  • Systemic Sclerosis/CREST Syndrome
  • Polymyositis/Dermatomyositis
  • Autoimmune Thyroid Diseases
  • Celiac Disease
  • Autoimmune Hepatitis
  • Primary Biliary Cirrhosis
  • ANCA Associated Diseases
  • Antiphospholipid Syndrome/Thromboembolic
  • Anti-GBM Disease
  • Diabetes Mellitus
  • Pernicious Anemia
  • Crohn’s Disease
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Infectious Disease Antigens

  • Anaplasmosis
  • Babesiosis
  • Borreliosis/Lyme Disease/Relapsing Fever
  • Candidiasis
  • Erythema Infectiosum
  • SARS-CoV-2
  • Scarlet Fever
  • Yersiniosis
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  • Food Allergens
  • Grass Allergens
  • Tree Allergens
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