| Smear Review | Smear Review AU Medical Center | 
      
        | SLO | Smith-Lemli-Opitz Screen, Plasma Mayo Clinic Laboratories in Rochester | 
      
        | Na | Sodium (Plasma) AU Medical Center | 
      
        | Urine Na | Sodium (Urine) AU Medical Center | 
      
        | FecNA | Sodium, Fecal ARUP Laboratories | 
      
        | sC5b9 | Soluble Complement 5b-9 (sC5b-9) Machaon Diagnostics | 
      
        | SLA IgG | Soluble Liver Antigen Antibody, IgG ARUP Laboratories | 
      
        | STFR | Soluble Transferrin Receptor (sTfR), Serum Mayo Clinic Laboratories in Rochester | 
      
        | SORBU | Sorbitol and Mannitol, Quantitative, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | RefSoybean | Soybean IgE AU Medical Center | 
      
        | Ur Spec Grav | Specific Gravity AU Medical Center | 
      
        | SMA Gene | Spinal Muscular Atrophy Genetic Testing (sponsored free testing) Invitae | 
      
        | SFGP | Spotted Fever Group Antibody, IgG and IgM, Serum Mayo Clinic Laboratories in Rochester | 
      
        | SCCA | Squamous Cell Carcinoma Antigen, Serum Mayo Clinic Laboratories in Rochester | 
      
        | SSA Ab | SSA Antibody AU Medical Center | 
      
        | SSB | SSB Antibodies AU Medical Center | 
      
        | Sterile BF GS | Sterile Body Fluid Culture with Gram Stain AU Medical Center | 
      
        | STER | Sterols, Plasma Mayo Clinic Laboratories in Rochester | 
      
        | Stool Cul | Stool Culture, Routine AU Medical Center | 
      
        | SABP | Streptococcal Antibodies Profile, Serum Mayo Clinic Laboratories in Rochester | 
      
        | Ag Strep Pneumococcal | Streptococcus pneumoniae Antigen, Urine AU Medical Center | 
      
        | STRNG | Strongyloides Antibody, IgG, Serum Mayo Clinic Laboratories in Rochester | 
      
        | FSTYR | Styrene, Occupational Exposure, Blood Medtox Laboratories, Inc. | 
      
        | SUAC | Succinylacetone, Blood Spot Mayo Clinic Laboratories in Rochester | 
      
        | SULFU | Sulfate, 24 Hour, Urine Mayo Clinic Laboratories in Rochester |