| CPEPT | C-PEPTIDE [LAB521] Pathology Laboratory Des Moines, IA | 
      
        | CRPL | C-Reactive Protein, Inflammatory LAB149 UnityPoint Finley | 
      
        | C1ESTM | C1 Esterase Inhibitor Antigen, Serum Mayo Clinic Laboratories in Rochester | 
      
        | C1ESTI | C1 Esterase Inhibitor, Functional, Serum Mayo Clinic Laboratories in Rochester | 
      
        | C1QM | C1q Complement, Functional, Serum Mayo Clinic Laboratories in Rochester | 
      
        | C2CMPM | C2 Complement, Functional, with Reflex, Serum Mayo Clinic Laboratories in Rochester | 
      
        | C3 | C3 Complement St. Luke's Hospital Cedar Rapids | 
      
        | C4 | C4 Complement, LAB151 St. Luke's Hospital Cedar Rapids | 
      
        | C5M | C5 Complement, Functional, Serum Mayo Clinic Laboratories in Rochester | 
      
        | C5DCUM | C5-DC Acylcarnitine, Quantitative, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | CABB | Cabbage, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | CHOCO | Cacao/Cocoa (Chocolate), IgE, Serum, LAB641 St. Luke's Hospital Cedar Rapids | 
      
        | UCD24M | Cadmium, 24 Hour, Urine Mayo Clinic Laboratories in Rochester | 
      
        | CADMM | Cadmium, Blood Mayo Clinic Laboratories in Rochester | 
      
        | CAFFM | Caffeine, Serum Mayo Clinic Laboratories in Rochester | 
      
        | CALCTM | Calcitonin, Serum Mayo Clinic Laboratories in Rochester | 
      
        | CA | Calcium LAB53 UnityPoint Finley | 
      
        | CAION | Calcium, Ionized LAB54 UnityPoint Finley | 
      
        | CAI | Calcium, Ionized, Serum Mayo Clinic Laboratories in Rochester | 
      
        | UCA24H | Calcium, Urine, 24 Hour Pathology Laboratory Des Moines, IA | 
      
        | UCAL | Calcium, Urine, Random Pathology Laboratory Des Moines, IA | 
      
        | CALPRM | Calprotectin, Feces Mayo Clinic Laboratories in Rochester | 
      
        | CANRYM | Canary Feathers, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | CA125 | Cancer Antigen 125 Pathology Laboratory Des Moines, IA | 
      
        | CA153M | Cancer Antigen 15-3 (CA 15-3), Serum Mayo Clinic Laboratories in Rochester |