| TBLMP | T and B Lymphocyte Panel | — |
| TGAMA | T-Cell Receptor Gamma Chain Rearrangement by DNA Amplification | — |
| BCL1 | t(11;14) Translocation by DNA Amplification | — |
| T3UR | T3 Uptake | — |
| T4T8 | T4/T8 Ratio | — |
| TACR | Tacrolimus (FK506) Level | — |
| CDTAP | Tapentadol & Metabolite, UR, Quant | — |
| TBGOLD | TB Interferon Antigen Response (QuantiFERON-TB Gold) | — |
| TBNK | TBNK Lymph Assay | — |
| TEST | Testosterone | Electrochemiluminescence Immunoassay |
| TSFED | Testosterone (Total) & Free by Equilibrium Dialysis | — |
| TBIO | Testosterone, Bioavailable & SHBG, Adult Male | — |
| TESTOS | Testosterone, Free and Total, Females or Children | — |
| FREETM | Testosterone, Free, Adult Male by ED/LC-MS/MS | — |
| FDTEST | Testosterone, Free, Direct | Direct Analog Enzyme Immunoassay (EIA) |
| TETG | Tetanus Antibody, IgG | — |
| THEVP | Thalassemia and Hemoglobinopathy Evaluation | — |
| THAUR | Thallium, Urine, 24 Hr. or Random | — |
| THAL | Thallium, Whole Blood | — |
| CDTHC | THC Confirmation, Urine | — |
| THCSQ | THC Metabolite, Serum, Quantitative | — |
| THEO | Theophylline | — |
| TPP | ThinPrep Imaged Pap | — |
| TPAB | ThinPrep Imaged Pap Age Based Testing | — |
| TPABGC | ThinPrep Imaged Pap Age Based Testing + GC/CT | — |
| TPABGCT | ThinPrep Imaged Pap Age Based Testing + GC/CT/TV | — |
| TPHPVRG | ThinPrep Imaged Pap w/ High Risk Screen & Reflex to Genotyping | — |
| TPHPV | ThinPrep Imaged Pap w/ HPV High Risk Screen | — |
| TPRABG | ThinPrep Imaged Pap w/ Reflex to HPV & Genotyping any Abnorm | — |
| TPABGCTA | ThinPrep Imaged Pap w/ Reflex to HPV & Genotyping if ASCUS D | — |
| TPRAB | ThinPrep Imaged Pap w/ Reflex to HPV any Abnormal Diagnosis | — |
| TPRASC | ThinPrep Imaged Pap w/ Reflex to HPV if ASCUS | — |
| THIOC | Thiocyanate, Serum | — |
| THMTB | Thiopurine Metabolites (6MMP & 6TGN) | — |
| THIO | Thiopurine Methyltransferase (TPMT), Enzyme Activity, RBC | — |
| THDZ | Thioridazine (Mellaril) | — |
| THRZ | Thorazine (Chlorpromazine) | — |
| TTIM | Thrombin Time | — |
| FFTAC | Thrombin-Antithrombin Complex | — |
| THYDEO | Thymidine and Deoxyuridine Analytes (Plasma) | Liquid chromatography/tandem mass spectrometry (LC/MS-MS) |
| THYGMS | Thyroglobulin by LC-MS/MS | — |
| THYGB | Thyroglobulin, Total | — |
| HTGR | Thyroglobulin, Tumor Marker Reflex, Serum | — |
| THYG | Thyroglobulin, Tumor Marker, Serum (Includes: Thyroglobulin and Thyroglobulin Antibody) | — |
| THYAPS | Thyroid Antibodies (Includes ATG and A-TPO) | Electrochemiluminescence Immunoassay |
| TRAB | Thyroid Hormone Receptor Antibody (TRAb) (Thyrotropin) | — |
| ATPO | Thyroid Peroxidase (TPO) Ab | Electrochemiluminescence Immunoassay |
| THYR | Thyroid Profile Reflex | Electrochemiluminescence Immunoassay |
| TSH | Thyroid Stimulating Hormone | Electrochemiluminescence Immunoassay |
| TSIM | Thyroid Stimulating Immunoglobulin | — |
| TBG | Thyroxine Binding Globulin (TBG) | — |
| TIG | Tiagabine (Gabitril) | — |
| TIDR | Tick Identification w/reflex to Borrelia Species by PCR | — |
| TICKPCR | Tick-Borne Disease Panel by PCR, Blood | — |
| TISCU | Tissue Culture | — |
| AP BX | Tissue Pathology | — |
| TPAA | Tissue Plasminogen Activator, Antigen | — |
| TTG | Tissue Transglutaminase (tTG) IgA | — |
| TTAFER | Tissue Transglutaminase Ab, IgA w/Reflex | — |
| TTIG | Tissue Transglutaminase IgG Ab | — |
| TNMQ | Titanium, Quantitative | — |
| TMAO | TMAO (Trimethylamine N-oxide) | Nuclear magnetic resonance (NMR) |
| TOBRAP | Tobramycin, Peak | — |
| TOBRAR | Tobramycin, Random | — |
| TOBRAT | Tobramycin, Trough | — |
| TLRFA | Toll-Like Receptor Function Assay | — |
| TOMATO | Tomato IgE | — |
| TOPIR | Topiramate (Topamax) | — |
| TORC | Torch Antibodies, IgG | — |
| TORCHM | TORCH Antibodies, IgM | — |
| XBIL | Total and Conjugated Bilirubin | Photometric, Colormetric Diazo Method |
| TP | Total Protein | Colorimetric Endpoint Biuret Method |
| BTP | Total Protein, Body Fluid | Colorimetric Endpoint Biuret Method |
| CFP | Total Protein, CSF | — |
| T3 | Total T3 | Electrochemiluminescence Immunoassay |
| T4 | Total T4 | Electrochemiluminescence Immunoassay |
| FBIL | Total, Direct, and Indirect Bilirubin | Photometric, Colormetric Diazo Method |
| TXCAG | Toxocara Antibody, IgG | — |
| TOXO | Toxoplasma gondii Antibody, IgG | — |
| TXPM | Toxoplasma gondii Antibody, IgM | — |
| TGPR | Toxoplasma gondii by PCR | — |
| TPMTGN | TPMT and NUDT15 Genotyping | — |
| TPSAB1 | TPSAB1 Copy Number Analysis by ddPCR | — |
| CDTRAM | Tramadol & Metabolite, UR, Quant | — |
| TRAMQ | Tramadol and Metabolite, Quant Serum or Plasma | — |
| TRAMUR | Tramadol, Urine Screen w/reflex to Quant | — |
| TRFR | Transferrin | — |
| TGFBP | Transforming Growth Factor beta, Plasma | — |
| TGFBS | Transforming Growth Factor beta, Serum | — |
| TRAZ | Trazodone (Desyrel) | — |
| TPATPA | Treponema pallidum Antibody by TP-PA | — |
| TPIFA | Treponema pallidum Antibody, IgG by IFA, Serum | — |
| TRICAB | Trichinella Antibody | — |
| TRICRNA | Trichomonas RNA | — |
| TAD | Tricyclic Antidepressants, Quantitative, Serum | — |
| TADQNT | Tricyclic Antidepressants, Urine Quantitation | — |
| TRIG | Triglycerides | Enzymatic Colorimetric Method |
| BTRI | Triglycerides, Body Fluid | Enzymatic Colorimetric Method |
| TWP | Tropheryma whipplei by PCR | — |
| HSTROP | Troponin I | — |
| TROPT | Troponin T | — |
| TRPAG | Trypanosoma cruzi IgG | — |
| TRYP | Trypsin, Serum | — |
| TRPT | Tryptase | — |
| TNF | Tumor Necrosis Factor - alpha | — |
| TYIAS | Type and Screen | — |
| TYSAB | Tysabri Antibodies | — |
