| Test Name (Click to sort by popular result) | COE Code |
| SARS | |
| SOS1 Gene Sequencing in Inherited Disorders | SOS1SS |
| SYT/SSX Translocation (Synovial Sarcoma) | MLABEL |
| Salicylate | SAL |
| Schistosoma Antibody, IgG | ML MISC |
| Scrub Typhus Antibodies | ML MISC |
| Sedimentation Rate, Westergren | WEST |
| Sedimentation Rate, Wintrobe | WIN |
| Selenium, Serum/Urine | SELEN/ML MISC |
| Semen Analysis | SEMEN |
| Semen Cryopreservation | CRYOSEMEN |
| Sensory Neuropathy Antibody Panel | ML MISC |
| Serotonin Release Assay | BCSRA |
| Serotonin, Serum | SEROTS |
| Serotonin, Whole Blood | SERO |
| Serous Fluids Cytology | |
| Sex Hormone Binding Globulin (SHBG), Serum | SHBG |
| Shiga-like Toxin | SLT |
| Sickle Cell Preparation | SCP |
| Sinemet | ML MISC |
| Sirolimus | SIRO |
| Skin Biopsy for Immunofluorescence | |
| Skin, AFB Culture | BAFB |
| Small Intestine Brushings Cytology | |
| Smooth Muscle Antibody | SM |
| Sodium, Fluid | SODF |
| Sodium, Serum | SOD |
| Sodium, Urine | SODU/SODQ |
| Soluble Liver Antigen (SLA) IgG | ML MISC |
| Soluble Transferrin Receptor (sTfR) | STFR |
| Somatostatin | FSOMA |
| Specific Gravity, Fluid | SPGR |
| Sperm Antibodies, Semen | ML MISC |
| Sperm Antibodies, Seminal Plasma | ML MISC |
| Sperm Antibodies, Serum | ML MISC |
| Sperm Antibody, Direct Immunobead Assay | DIBT |
| Sputum Cytology | SPUT |
| Sputum, AFB Culture | BAFB |
| Sputum, Fungus Culture | FNG |
| Staphylococcus aureus Culture | STSN |
| Staphylococcus aureus Culture, Methicillin Resistant | MRSA |
| Stem Cell Analysis | FLABEL |
| Stone Analysis | CASA |
| Stool, AFB Culture | BAFB |
| Stool, Aerobic Culture | STL, SLT |
| Stool, Yeast Culture | FNSN |
| Streptococcus Group A Culture | SSN |
| Streptococcus Group A Screen by Immunoassay | SIA |
| Streptococcus Group B DNA by PCR, Vaginal / Rectal | BSSN |
| Streptococcus pneumonia Antigen, Urine | ML MISC |
| Streptococcus pneumoniae IgG Antibody Panel | PN7/PN23 |
| Streptolysin O Antibody | ASO |
| Streptomycin Level | STREPM |
| Streptozyme Screen | STREP |
| Striational (Striated Muscle) Antibody | STR |
| Strongyloides Antibody, IgG | STRONG |
| Strychnine | SL MISC |
| Substance P | FSUBP |
| Succinylacetone, Qualitative, Urine | SA |
| Sulfisoxazole, Serum or Plasma | ML MISC |
| Sulfite Analysis, Urine | USUL |
| Synthetic Glucocorticoid Screen, Serum | ML MISC |
| Syphilis Antibody, IgG & IgM | ML MISC |
| Syphilis Confirmatory Test, FTA-ABS | FTA/FTA A |
| Syphilis Darkfield Exam | SENDOUT |
| Syphilis Screening Test, RPR, Serum | RPR |
| Syphilis Screening Test, VDRL, CSF | ML MISC |