| 91212 | T-Cell Immunodeficiency Profile |
| 91050 | T-Helper Cells |
| 1415 | T3 |
| 91197 | T3 Reverse |
| 2187 | T3 Total |
| 2001 | T3 Uptake |
| 2296 | T3, Free |
| 1415 | T3U |
| 1409 | T3uptake |
| 1415 | T4 |
| 2003 | T4 Total |
| 2146 | T4, Free |
| 1899 | T4, Free / TSH |
| 2648 | Tacrolimus |
| 91103 | Tambocor |
| 4200 | TB Smear |
| 4204 | TB, Culture |
| 91350 | TB, Culture (Blood) |
| 2634 | TBG |
| 91220 | TCA |
| 2110 | Tegretol |
| 2179 | Testosterone |
| 91078 | Testosterone, DIOH |
| 5025 | Testosterone, Free + Total |
| 91215 | Tetanus Antibody, IgG |
| 2375 | TG antibody |
| 91317 | THC |
| 2117 | Theophylline |
| 91227 | Thiamine |
| 4015 | Throat Culture |
| 91216 | Thrombin Time with Reflex to Thrombin Time 1:1 Mix |
| 14033 | Thrombosis Panel |
| 2632 | Thyroglobulin |
| 2375 | Thyroglobulin AB |
| 1416 | Thyroid Autoantibody Group |
| 1409 | Thyroid Panel I |
| 1415 | Thyroid Panel II (Hyper) |
| 1412 | Thyroid Panel III (Hypo) |
| 2370 | Thyroid Peroxidase |
| 91221 | Thyroid Receptor |
| 2090 | Thyroid Stimulating Hormone |
| 2190 | Thyroid Stimulating Hormone w/Free T4 Reflex |
| 91340 | Thyroid Stimulating Immunoglobulin |
| 2634 | Thyroxine Binding Globulin |
| 2146 | Thyroxine, Free |
| 1899 | Thyroxine, Free and TSH |
| 2003 | Thyroxine, Total |
| 91092 | Tissue Transglutaminase Antibody, IgA |
| 91365 | Tissue Transglutaminase Antibody, IgG |
| 91292 | TNF, Alpha |
| 2118 | Tobramycin, Peak |
| 2122 | Tobramycin, Trough |
| 91142 | Tofranil |
| 91217 | Topamax |
| 91217 | Topiramate |
| 91305 | TORCH Antibodies, IgG |
| 91349 | TORCH Antibodies, IgM |
| 2014 | Total + Direct Bilirubin |
| 2006 | Total Newborn Bilirubin |
| 1020 | Total Protein |
| 2187 | Total T3 |
| 2003 | Total T4 |
| 2172 | Toxoplasma Antibody, IgG |
| 2171 | Toxoplasma Antibody, IgG / IgM |
| 2173 | Toxoplasma Antibody, IgM |
| 1020 | TP |
| 2370 | TPO |
| 91221 | TRAb |
| 2281 | Transferrin |
| 2384 | Transthyretin |
| 91218 | Trazodone |
| 2628 | Treponema Antibody, IgG |
| 91224 | Treponema pallidum (VDRL), CSF with Reflex to Titer |
| 91225 | Treponema pallidum (VDRL), Serum |
| 91210 | Treponema pallidum Antibody (FTA-ABS) with Reflex |
| 91209 | Treponema pallidum Antibody by TP-PA (MHA-TP) |
| 91219 | Trichinella Antibody |
| 4058 | Trichomonas vaginalis, Culture |
| 91220 | Tricyclic Screen, Serum |
| 1032 | Triglycerides |
| 2296 | Triiodothyrine, Free |
| 91197 | Triiodothyrine, Reverse |
| 2187 | Triiodothyrine, Total |
| 2001 | Triiodothyrine, Uptake |
| 91336 | Trileptal |
| 2273 | Troponin I |
| 91337 | Trypsin-Like Immunoreactivity |
| 91338 | Tryptase |
| 1412 | TSH |
| 91221 | TSH Receptor Antibody |
| 2190 | TSH w/Free T4 Reflex |
| 2090 | TSH, 3rd Gen |
| 91340 | TSI |
| 91092 | TTG Antibody, IgA |
| 91365 | TTG Antibody, IgG |
| 4204 | Tuberculosis, Culture |
| 91350 | Tuberculosis, Culture (Blood) |
| 91222 | Tularemia Antibodies |
| 2631 | Tumor Marker-AFP |
| 91292 | Tumor Necrosis Factor-Alpha |
| 2101 | Tylenol |