| Test Code | Test Name - (*) found by Test Code | Production Lab | Found by Synonym |
| TS | ABO, RH AND ANTIBODY SCREEN | NPL | YES |
| ACETM | ACETAMINOPHEN (TYLENOL) | NPL | YES |
| ACFA | AFB CULTURE WITH AFB STAIN | ARUP | YES |
| ACFP | AFB STAIN WITH CULTURE | NDPHL | YES |
| HCGTM | BETA-HCG, QUANT TUMOR MARKER | ARUP | YES |
| TB | BILIRUBIN, TOTAL | NPL | YES |
| TRH | BLOOD GROUP & RH | NPL | YES |
| BFTRG | BODY FLUID, TRIGLYCERIDE | NPL | YES |
| CTX | C-TELOPEPTIDE BETA-CROSS-LINKED | ARUP | YES |
| CANN | CANNABINOID SCREEN | NPL | YES |
| CARB | CARBAMAZEPINE (TEGRETOL) | NPL | YES |
| CRBF | CARBAMAZEPINE, FREE AND TOTAL | ARUP | YES |
| CLIAC | CELIAC DISEASE REFLEXIVE PANEL | ARUP | YES |
| CLORZ | CLORAZEPATE | ARUP | YES |
| CH50 | COMPLEMENT ACTIVITY EIA, TOTAL | ARUP | YES |
| CORD | CORD BLOOD (ABO/RH) | NPL | YES |
| CF | CULTURE, CYSTIC FIBROSIS | NPL | YES |
| TC | CULTURE, THROAT GROUP A BETA STREP | NPL | YES |
| THCC | DRUGS OF ABUSE CONF, THC (CANNABINOIDS) | ARUP | YES |
| EOSCT | EOSINOPHIL COUNT, TOTAL | NPL | YES |
| FLEC | FLECAINIDE | ARUP | YES |
| FTAP | FLUORESCENT TREPONEMAL ANTIBODY, SERUM | NDPHL | YES |
| TUL | FRANCISELLA TULARENSIS ANTIBODIES, TOTAL | ARUP | YES |
| TGENT | GENTAMICIN, TROUGH | NPL | YES |
| HYDPT | HYDROXYPROLINE, TOTAL URINE | ARUP | YES |
| IMIP | IMIPRAMINE/DESIPRAMINE | ARUP | YES |
| IRS | IRON & TRANSFERRIN | NPL | YES |
| TCELL | LYMPHOCYTE SUBSET PANEL 3 | ARUP | YES |
| TPO | MICROSOMAL ANTIBODY (TPO) | ARUP | YES |
| OXCRB | OXCARBAZEPINE (TRILEPTAL) | ARUP | YES |
| TRAVL | PHLEBOTOMY FEE FOR TRAVEL | NPL | YES |
| TP | PROTEIN, SERUM | NPL | YES |
| QFTBA | QUANTIFERON-TB GOLD IN TUBE | ARUP | YES |
| T3 | T3 (TRIIODOTHYRONINE), TOTAL | NPL | |
| T3UP | T3 UPTAKE | ARUP | |
| FT3 | T3, FREE | NPL | |
| FT4 | T4 (THYROXINE) FREE | NPL | |
| TT4 | T4 (THYROXINE), TOTAL | ARUP | |
| FK506 | TACROLIMUS (FK506) | QR | |
| FTST | TESTOSTERONE FREE, ADULT MALE | ARUP | |
| FTSTF | TESTOSTERONE FREE, FEMALES OR CHILDREN | ARUP | |
| TBSHB | TESTOSTERONE, BIOAVAILABLE & SHGB,FEMALE | ARUP | |
| FTTSF | TESTOSTERONE, FREE & TOTAL(FEMALE/CHILD) | ARUP | |
| FTTST | TESTOSTERONE, FREE & TOTAL, ADULT MALE | ARUP | |
| TESTO | TESTOSTERONE, TOTAL | NPL | |
| TETG | TETANUS ANTIBODY, IGG | ARUP | |
| THEO | THEOPHYLLINE (AMINOPHYLLINE) | NPL | |
| TPHLB | THERAPEUTIC PHLEBOTOMY | NPL | |
| THPRN | THIOPURINE METABOLITES | MAYO | |
| TPMT | THIOPURINE METHYLTRANSFERASE, RBC | MAYO | |
| THX | THIOTHIXENE | ARUP | |
| THYRO | THYROGLOBULIN & THYROGLOBULIN AB | ARUP | |
| THYAB | THYROGLOBULIN ANTIBODY | ARUP | |
| THYAP | THYROID ABS - TPO & THYROGLOBULIN AB | ARUP | |
| TSH | THYROID STIMULATING HORMONE,3RD G | NPL | |
| TSI | THYROID STIMULATING IMMUNOGLOBULIN | ARUP | |
| TBG | THYROXINE BINDING GLOBULIN | ARUP | |
| TTG | TISSUE TRANSGLUTAMINASE ANTIBODY, IGA | ARUP | |
| TTGG | TISSUE TRANSGLUTAMINASE ANTIBODY, IgG | ARUP | |
| TOB | TOBRAMYCIN | NPL | |
| PTOB | TOBRAMYCIN PEAK | NPL | |
| TTOB | TOBRAMYCIN, TROUGH | NPL | |
| TOPIR | TOPIRAMATE | ARUP | |
| TORCH | TORCH ANTIBODIES, IGM | ARUP | |
| FTRS | TOTAL REDUCING SUBSTANCES, FECAL | NPL | |
| TRS | TOTAL REDUCING SUBSTANCES, URINE | NPL | |
| TOXO | TOXOPLASMA AB, IGG AND IGM | ARUP | |
| TOXOG | TOXOPLASMA ANTIBODIES, IGG | ARUP | |
| TOXOM | TOXOPLASMA ANTIBODIES, IGM | ARUP | |
| TRMUQ | TRAMADOL & METABOLITE QUANT. URINE | MEDTOX | |
| TRAM | TRAMADOL & METABOLITES, QUANT. | MEDTOX | |
| TRAN | TRANSFERRIN | NPL | |
| TXP1 | TRANSFUSION REACTION | NPL | |
| TRAZ | TRAZODONE | ARUP | |
| FTAA | TREPONEMA PALLIDUM AB.(FTA ABS) W/REFLEX | ARUP | |
| TRIF | TRIFLUOPERAZINE | ARUP | |
| TRIG | TRIGLYCERIDES | NPL | |
| TROPI | TROPONIN I, PLASMA | NPL | |
| TRAB | TSH RECEPTOR ANTIBODY | ARUP | |
| TTGR | TTG ABY IGA REFLEX TO ENDOMYSIAL AB | ARUP | |
| TSDRW | TYPE & ANTIBODY SCREEN (TO ST A)-PREOP | NPL | |
| TYR | TYROSINE, PLASMA | ARUP | |
| TZK | TZANCK SMEAR | STAH | |
| VAGP | VAGINAL PATHOGENS BY DNA PROBES | NPL | YES |
| TVAN | VANCOMYCIN, TROUGH | NPL | YES |
| VB1PL | VITAMIN B1 (THIAMINE) PLASMA | ARUP | YES |
| VB1WB | VITAMIN B1 (THIAMINE) WHOLE BLOOD | ARUP | YES |
| WP | WET PREP | NPL | YES |