| C difficile Toxin | C difficile Toxin, PCR FMH Microbiology | 
      
        | C GC Only | C GC Only FMH Microbiology | 
      
        | C Other | C Other FMH Microbiology | 
      
        | FCPEU | C-Peptide, 24-Hour Urine LabCorp Burlington | 
      
        | CPR | C-Peptide, Serum Mayo Clinic Laboratories in Rochester | 
      
        | CRP | C-Reactive Protein Quantitative FMH Laboratory | 
      
        | HSCRP | C-Reactive Protein, High Sensitivity, Serum Mayo Clinic Laboratories in Rochester | 
      
        | C1ES | C1 Esterase Inhibitor Antigen, Serum Mayo Clinic Laboratories in Rochester | 
      
        | C1INF | C1 Esterase Inhibitor, Functional, Serum Mayo Clinic Laboratories in Rochester | 
      
        | CA125 | CA 125 (Ortho) FMH Laboratory | 
      
        | CABB | Cabbage, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | COCOA | Cacao/Cocoa, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | CDOU | Cadmium Occupational Exposure, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | CDUOE | Cadmium Occupational Exposure, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | CDUCR | Cadmium/Creatinine Ratio, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | CDCU | Cadmium/Creatinine Ratio, Urine Mayo Clinic Laboratories in Rochester | 
      
        | CAFF | Caffeine, Serum Mayo Clinic Laboratories in Rochester | 
      
        | CATN | Calcitonin, Serum Mayo Clinic Laboratories in Rochester | 
      
        | CA | Calcium FMH Laboratory | 
      
        | ICA | Calcium Ionized FMH Laboratory | 
      
        | CALU | Calcium, 24 Hour, Urine Mayo Clinic Laboratories in Rochester | 
      
        | CALC5 | Calcium, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | CCTR | Calcium/Creatinine Ratio, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | CACR3 | Calcium/Creatinine Ratio, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | CALPR | Calprotectin, Feces Mayo Clinic Laboratories in Rochester |