Test Index - T

T Cells (CD3+)     see CD4/8 counts (T Lymphocyte subsets)
T Lymphocyte subsets     see CD4/8 counts (T Lymphocyte subsets)
Tau protein - CSF     see dementia biomarkers (CSF)
Tau transferrin (?CSF fluid)     see beta-2 transferrin (for ?CSF-containing fluids)
Tegretol    see carbamazepine
Tetanus immunity     see vaccine immunity testing
TGN     see 6-TGN and 6-MMPN
Thalassaemia screen    see haemoglobinopathy screen
Thiamine     see vitamin B1
Therapeutic heparin ratio    see APTT ratio - therapeutic heparin ratio
Thioguanine nucleotides and methylmercaptopurine nucleotides     see 6-TGN and 6-MMPN
Thiopurine methyltransferase     see TPMT
Thyroglobulin antibody - only offered routinely as part of thyroglobulin testing.
Thyroid function tests     see TFT
Thyroid peroxidase antibody     see TPO antibody
Tick-borne Encephalitis (TBE)     see tropical virus serology
Tinzaparin (Innohep)     see Heparin assay (Anti-Xa)
Tissue transglutaminase (TTG) antibody     see tTG antibody
Tocopherol     see vitamin E
Total bilirubin     see bilirubin (total)
Total Tau and A-Beta 1-42 (CSF)     see dementia biomarkers (CSF)
Total:HDL cholesterol ratio     see lipid profile
For therapeutic drug monitoring see individual drugs
TPN trace element profile (for parenteral nutrition profile click here)
TRAb     see thyroid receptor antibody
Trace elements    request individual elements unless requesting in TPN patient with TPN trace element profile.
Transferrin, transferrin saturation    see iron studies
Transferrin isoforms (transferrin glycoforms, transferrin isoelectric focusing)
Treponema     see syphilis
Triglycerides (triacylglycerol)     see lipid profile
Trimethylaminuria ("fish odour syndrome").
Trypsinogen    see immunoreactive trypsinogen
Tubular phosphate reabsorption     see phosphate (urine)
Tyrosine     see PKU monitoring