| FIA2A | IA-2 Antibody Quest Diagnostics Nichols Institute | 
      
        | FIAAB | IA2 Autoantibodies Esoterix Endocrinology | 
      
        | IDHQ | IDH1 (R132) and IDH2 (R140 and R172) Quantitative Detection, Droplet Digital PCR, Varies Mayo Clinic Laboratories in Rochester | 
      
        | IDHT | IDH1 and IDH2 Mutation Analyses, Next-Generation Sequencing, Tumor Mayo Clinic Laboratories in Rochester | 
      
        | IDTRT | IDH1, IDH2, and TERT Mutation Analysis, Next-Generation Sequencing, Tumor Mayo Clinic Laboratories in Rochester | 
      
        | IPFGP | Idiopathic Pulmonary Fibrosis Gene Panel, Varies Mayo Clinic Laboratories in Rochester | 
      
        | I2SB | Iduronate-2-Sulfatase, Blood Spot Mayo Clinic Laboratories in Rochester | 
      
        | I2SWB | Iduronate-2-Sulfatase, Leukocytes Mayo Clinic Laboratories in Rochester | 
      
        | IGGS | IgG Subclasses, Serum Mayo Clinic Laboratories in Rochester | 
      
        | SFIGS | IgG, Serum Mayo Clinic Laboratories in Rochester | 
      
        | IGGS4 | IgG4, Immunoglobulin Subclasses, Serum Mayo Clinic Laboratories in Rochester | 
      
        | IDH2 | IHD2, R172K Mutation, Immunostain, Technical Component Only Mayo Clinic Laboratories in Rochester | 
      
        | IFXED | Immunofixation Heavy Chain Type Delta and Epsilon, Serum Mayo Clinic Laboratories in Rochester | 
      
        | IGA | Immunoglobulin A (IgA), Serum Mayo Clinic Laboratories in Rochester | 
      
        | IGD | Immunoglobulin D (IgD), Serum Mayo Clinic Laboratories in Rochester | 
      
        | IGE | Immunoglobulin E (IgE), Serum Mayo Clinic Laboratories in Rochester | 
      
        | FLCS | Immunoglobulin Free Light Chains, Serum Mayo Clinic Laboratories in Rochester | 
      
        | IGG | Immunoglobulin G (IgG), Serum Mayo Clinic Laboratories in Rochester | 
      
        | KCSFP | Immunoglobulin Kappa Free Light Chain, Spinal Fluid Mayo Clinic Laboratories in Rochester | 
      
        | IGM | Immunoglobulin M (IgM), Serum Mayo Clinic Laboratories in Rochester | 
      
        | TLCU | Immunoglobulin Total Light Chains, Urine Mayo Clinic Laboratories in Rochester | 
      
        | IMMG | Immunoglobulins (IgG, IgA, and IgM), Serum Mayo Clinic Laboratories in Rochester | 
      
        | IEICP | Inborn Errors of Immunity Comprehensive Gene Panel, Varies Mayo Clinic Laboratories in Rochester | 
      
        | IMMAU | Inborn Errors of Immunity with Immune Dysregulation and Autoimmunity Gene Panel, Varies Mayo Clinic Laboratories in Rochester | 
      
        | IBDP2 | Inflammatory Bowel Disease Serology Panel, Serum Mayo Clinic Laboratories in Rochester |