| Test Name (Click to sort by popular result) | COE Code |
| T Cell (TCRgamma) Gene Rearrangement | MLABEL |
| T3 (Triiodothyronine), Free | FT3 |
| T3 (Triiodothyronine), Reverse | RET3 |
| T3 (Triiodothyronine), Total | T3 |
| T3 (Triiodothyronine), Uptake | T3U |
| T4 (Thyroxine), Free | FT4 |
| T4 (Thyroxine), Total | T4 |
| TB Gold, Quantiferon | QFTB |
| Tacrolimus | TACRO |
| TdT (Terminal Deoxynucleotidyl Transferase) | FLABEL |
| Teichoic Acid Antibody | TEIC |
| Testosterone | TESTO |
| Testosterone, Bioavailable | BIOTEST |
| Testosterone, Free | FT |
| Tetanus Toxoid IgG Antibody | TAA |
| Thallium, Serum/Urine | TL-S/TL-U |
| Theophylline | THEO |
| Thiocyanate | THIO |
| Thiopurine Metabolites (6-TG and 6-MMP) | 6MMP |
| Thiopurine Methyltransferase (TPMT), Erythrocytes, Enzyme Activity (Mayo) | TPMT |
| Thiopurine Methyltransferase (TPMT), Erythrocytes, Enzyme Activity (Prometheus) | TPMTPHE |
| Thiopurine Methyltransferase (TPMT), Genotype | TPMTGEN |
| Thioridazine | STHIO |
| Throat, Yeast Culture | FNSN |
| Thrombin Time | TCTD |
| Thyroglobulin | THYG |
| Thyroid Antibodies | THY |
| Thyroid Microsomal Antibody | MICRSOM AB |
| Thyroid Peroxidase Antibodies, Serum | ATPO |
| Thyroid Stimulating Hormone | TSH |
| Thyroid Stimulating Immunoglobulin | TSIS |
| Thyroid Thyroglobulin Antibody | THYRGLB AB |
| Thyrotropin Receptor Antibody | THYROTR |
| Thyroxine Binding Globulin | TBGI |
| Tiagabine (Gabitril) | ML MISC |
| Tissue Culture Only | CGLABEL |
| Tissue Transglutaminase Antibody, IgA | TTRGA |
| Tissue Transglutaminase Antibody, IgG | TTRGG |
| Tissue Typing, Class I Antigens (HLA - A, B, C) | TTYPE |
| Tissue Typing, Class II Antigens (HLA - DR, DQ) | TTYPE |
| Tissue Typing, Cytotoxic Antibody Screen (PRA) | TTYPE |
| Tissue Typing, Single Antigen | TTYPE |
| Tissue Typing, Single Antigen HLA-B*5701 | TTYPE |
| Tissue, AFB Culture | BAFB |
| Tissue, Aerobic Culture | DTIS/DTISG |
| Tissue, Anaerobic Culture | ANNC |
| Tissue, Fungus Culture | FNG |
| Tobramycin | TOB R/TOB PK/TOB TR |
| Tocainide | SL MISC |
| Topiramate | TOPIR |
| Torch Screen | |
| Total Volume, Urine | TV |
| Toxocara Antibody | ML MISC |
| Toxoplasma Antibody, IgG | TOXG |
| Toxoplasma Antibody, IgG and IgM, CSF | ML MISC |
| Toxoplasma Antibody, IgM | TOXM |
| Toxoplasma DNA by PCR, Quantitative | VTOXO/VBTOXO |
| Tracheal Brushings Cytology | |
| Tracheal Washings Cytology | |
| Transferrin | TSF |
| Transfusion Reaction, Delayed | TXRX |
| Transfusion Reaction, Immediate | TXRX |
| Trazodone, Serum | ML MISC |
| Trichinella Antibody | STRIC |
| Trichomonas vaginalis Culture | TRICH |
| Tricyclic Antidepressant Screen | TADS |
| Trifluoperazine, Serum | ML MISC |
| Triglycerides, Fluid | TRIGF |
| Triglycerides, Serum | TRIG |
| Trimethoprim/Sulfamethoxazole | ML MISC |
| Trimethylamine, Urine | ML MISC |
| Tropheryma whipplei DNA by PCR, Qualitative | ML MISC |
| Troponin I | TROP |
| Troponin I, Emergency Department | POC TROP |
| Trypsin, Stool | ML MISC |
| Trypsin-Like Immunoreactivity | FTRYP |
| Tumor Necrosis Factor - Alpha | TNFA |
| Type and Screen | TS/ITS |
| Type and Screen, No Wristband | ADM |
| Type and Screen, Preadmission | PTS/PTSI |
| Type and Screen, Prenatal | PN |
| Type and Screen, Progenitor Cell Transplant | BMT TS |
| Tzanck Smear | |