| 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 |
| 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 |
| 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 |
| 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) |
| 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) |
| TRAB | Thyroid Hormone Receptor Antibody (TRAb) (Thyrotropin) |
| ATPO | Thyroid Peroxidase (TPO) Ab |
| THYR | Thyroid Profile Reflex |
| TSH | Thyroid Stimulating Hormone |
| 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) |
| 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 |
| TP | Total Protein |
| BTP | Total Protein, Body Fluid |
| CFP | Total Protein, CSF |
| T3 | Total T3 |
| T4 | Total T4 |
| FBIL | Total, Direct, and Indirect Bilirubin |
| 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 |
| BTRI | Triglycerides, Body Fluid |
| 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 |
