Lab report names starting with T

Abbreviations

• T BILIBilirubin, TotalA yellow pigment made when old red blood cells break down. Your liver clears it, so the level reflects red cell turnover and bile flow.
• T-SPOTT-SPOT.TB (IGRA result)Counts white blood cells that react to tuberculosis proteins. It shows whether your immune system has met TB bacteria, not whether you are sick.
• T-Spot.TBT-SPOT.TB (IGRA result)Counts white blood cells that react to tuberculosis proteins. It shows whether your immune system has met TB bacteria, not whether you are sick.
• T. gondii IgGToxoplasma gondii IgGMeasures long-lasting IgG antibodies to the Toxoplasma parasite. A positive result means past exposure, not necessarily a recent infection.
• T. gondii IgMToxoplasma gondii IgMLooks for IgM antibodies to the Toxoplasma parasite. They appear early in an infection but can linger for a year or more.
• T. vaginalisTrichomonas vaginalis NAATA test that looks for the genetic material of Trichomonas vaginalis, the parasite behind trichomoniasis, a common and curable sexually transmitted infection.
• T003Birch IgEMeasures IgE antibodies to birch tree pollen to show whether your immune system has become sensitized to it, a common cause of spring hay fever.
• t007Oak IgEMeasures IgE antibodies to white oak pollen in your blood. A detectable result means you are sensitized, which is not the same as an allergy.
• t008Elm IgEMeasures IgE antibodies to American elm pollen, one of several tree pollens that can cause sneezing, congestion and itchy eyes.
• t009Olive Tree IgEMeasures IgE antibodies to olive tree pollen in your blood. A detectable result means you are sensitized, which is not the same as an allergy.
• t011Sycamore IgEMeasures IgE antibodies to sycamore (London plane) tree pollen, one of many tree pollens that can cause sneezing, congestion and itchy eyes in spring.
• t11Sycamore IgEMeasures IgE antibodies to sycamore (London plane) tree pollen, one of many tree pollens that can cause sneezing, congestion and itchy eyes in spring.
• t3Birch IgEMeasures IgE antibodies to birch tree pollen to show whether your immune system has become sensitized to it, a common cause of spring hay fever.
• T3RUT3 UptakeShows how many binding spots on your blood proteins are open for thyroid hormone. It is not a hormone level, and it is used to work out the free thyroxine index.
• T3UT3 UptakeShows how many binding spots on your blood proteins are open for thyroid hormone. It is not a hormone level, and it is used to work out the free thyroxine index.
• T4/T8CD4/CD8 RatioCD4 helper T cells divided by CD8 cytotoxic T cells. It shows how those two groups of T cells balance.
• t6Mountain Cedar (Juniper) IgEMeasures IgE antibodies to mountain cedar pollen, a major winter allergen in parts of the US. A higher level means sensitization, which doesn't always cause symptoms.
• t7Oak IgEMeasures IgE antibodies to white oak pollen in your blood. A detectable result means you are sensitized, which is not the same as an allergy.
• t70White mulberry IgEMeasures IgE antibodies to white mulberry tree pollen, one of several tree pollens that can cause hay fever symptoms in spring.
• t8Elm IgEMeasures IgE antibodies to American elm pollen, one of several tree pollens that can cause sneezing, congestion and itchy eyes.
• t9Olive Tree IgEMeasures IgE antibodies to olive tree pollen in your blood. A detectable result means you are sensitized, which is not the same as an allergy.
• TACTacrolimusThe amount of the anti-rejection medicine tacrolimus in your blood just before your next dose, used by your transplant team to fine-tune treatment.
• TAGTriglyceridesA type of fat in your blood that carries energy from food. It rises after meals, and high levels are linked to heart disease and, when very high, pancreatitis.
• TBABile Acids, Total (fasting)Bile acids are made by the liver to digest fat. Their level in a fasting blood sample can rise when bile isn't flowing out of the liver normally.
• TBIITSH Receptor Antibodies (TRAb / TBII)Antibodies that attach to the thyroid's TSH receptor. They are strongly linked to Graves' disease, an autoimmune cause of an overactive thyroid.
• TBILBilirubin, TotalA yellow pigment made when old red blood cells break down. Your liver clears it, so the level reflects red cell turnover and bile flow.
• TBPAPrealbumin (Transthyretin)A protein made by the liver that carries thyroid hormone and a vitamin A complex. It falls with inflammation, so it is a weak guide to nutrition on its own.
• TCTotal CholesterolThe total amount of cholesterol in your blood, counting HDL, LDL and VLDL together. It is one piece of the lipid panel.
• TC/HDLTotal Cholesterol / HDL RatioYour total cholesterol divided by your HDL ("good") cholesterol. Some labs print it as a single number that sums up your cholesterol balance.
• TCholTotal CholesterolThe total amount of cholesterol in your blood, counting HDL, LDL and VLDL together. It is one piece of the lipid panel.
• TCMHMean Corpuscular Hemoglobin (MCH)How much hemoglobin, on average, each of your red blood cells carries.
• TCO2Bicarbonate (Total CO2)Bicarbonate, often printed as CO2 or total CO2, gives a clue about your body's acid-base balance. It is part of most routine blood panels.
• TDPVitamin B1 (Thiamine)Measures the active form of vitamin B1 (thiamine) in whole blood, to see whether your body has enough of this B vitamin.
• TeBGSex Hormone-Binding Globulin (SHBG)A protein made by your liver that carries testosterone and estradiol in your blood. It helps set how much of each hormone is free to act.
• TECEosinophils (Absolute)The number of eosinophils, white blood cells that take part in allergies and fight some parasites, in each microliter of your blood.
• Tetanus IgGTetanus antitoxoid IgGMeasures antibodies against the tetanus toxin to show whether vaccination still gives you protection.
• TfTransferrinA protein that carries iron through your blood. It tends to rise when iron stores are low and fall with inflammation, liver problems or low protein.
• TFGeeGFR (Creatinine-based)An estimate of how well your kidneys filter blood, worked out from your creatinine, age and sex.
• TgThyroglobulin (Tg)A protein made only by thyroid cells. It is mainly used after thyroid cancer treatment as a tumor marker, and it is not a test for diagnosing cancer.
• TG/HDLTriglyceride / HDL RatioYour triglycerides divided by your HDL cholesterol. Researchers use it as a simple hint of insulin resistance, but there is no standard cutoff.
• TG/HDL-CTriglyceride / HDL RatioYour triglycerides divided by your HDL cholesterol. Researchers use it as a simple hint of insulin resistance, but there is no standard cutoff.
• TG2 IgATissue Transglutaminase (tTG) IgAA blood test for antibodies to tissue transglutaminase, a gut enzyme. It is the main blood test used when celiac disease is suspected.
• TG2 IgGTissue Transglutaminase (tTG) IgGA blood test for IgG antibodies to tissue transglutaminase, a gut enzyme. It is used for celiac disease testing mainly when IgA is low or missing.
• TGA-IgATissue Transglutaminase (tTG) IgAA blood test for antibodies to tissue transglutaminase, a gut enzyme. It is the main blood test used when celiac disease is suspected.
• TGA-IgGTissue Transglutaminase (tTG) IgGA blood test for IgG antibodies to tissue transglutaminase, a gut enzyme. It is used for celiac disease testing mainly when IgA is low or missing.
• TgAbThyroglobulin AntibodiesAntibodies aimed at thyroglobulin, a protein made in the thyroid. They are linked to autoimmune thyroid conditions and affect thyroglobulin testing.
• TGPAlanine Aminotransferase (ALT)An enzyme made mostly in liver cells. It leaks into the blood when liver cells are irritated or damaged.
• THWidal, Salmonella Typhi H TiterA Widal test titer for the typhoid bacterium's H (flagellar) antigen. It can stay raised after an old infection or a vaccine.
• Th cellsCD4+ T Helper Cells, absoluteThe number of CD4+ T helper cells in a microliter of blood. These white blood cells help direct your immune response.
• THBRT3 UptakeShows how many binding spots on your blood proteins are open for thyroid hormone. It is not a hormone level, and it is used to work out the free thyroxine index.
• THCUrine Cannabinoids (THC) ScreenA urine test that looks for the main breakdown product of THC, the active ingredient in cannabis. It shows past use, not whether you are impaired now.
• THC-COOHUrine Cannabinoids (THC) ScreenA urine test that looks for the main breakdown product of THC, the active ingredient in cannabis. It shows past use, not whether you are impaired now.
• tHcyHomocysteineHomocysteine is an amino acid your body clears with B vitamins. Higher levels can reflect low B12 or folate, kidney function, age or genetics.
• ThDPVitamin B1 (Thiamine)Measures the active form of vitamin B1 (thiamine) in whole blood, to see whether your body has enough of this B vitamin.
• TIBCTotal Iron-Binding Capacity (TIBC)How much iron your blood's carrier protein, transferrin, could hold in total. It usually rises when iron stores are low.
• tIgEImmunoglobulin E (IgE), TotalTotal IgE is the overall amount of this allergy-related antibody in your blood. High levels are common with allergies, but the test can't show what you react to.
• TnITroponin I (Cardiac, incl. High-Sensitivity)A protein released when heart muscle cells are damaged. Doctors use it to find out whether the heart muscle has been injured, most often when someone has chest pain.
• TnTTroponin T (Cardiac, incl. High-Sensitivity)A protein released when heart muscle cells are damaged. Doctors use it to find out whether the heart muscle has been injured, most often when someone has chest pain.
• TOWidal, Salmonella Typhi O TiterA Widal test titer for the typhoid bacterium's O antigen. One result cannot confirm or rule out typhoid fever.
• Total anti-HBcHepatitis B Core Antibody, Total (Anti-HBc)An antibody your body makes after hepatitis B infection. A positive result is linked to past or current infection. The vaccine does not cause it.
• Total CKCreatine Kinase (CK), TotalAn enzyme found mostly in muscle. It leaks into the blood when muscle is strained or injured, so hard exercise is a common reason for a high result.
• Total TTestosterone, TotalCounts all the testosterone in your blood, both free and protein-bound. Usual levels differ a lot by sex, age and the time of day of the draw.
• Total-CTotal CholesterolThe total amount of cholesterol in your blood, counting HDL, LDL and VLDL together. It is one piece of the lipid panel.
• Toxo IgGToxoplasma gondii IgGMeasures long-lasting IgG antibodies to the Toxoplasma parasite. A positive result means past exposure, not necessarily a recent infection.
• Toxo IgMToxoplasma gondii IgMLooks for IgM antibodies to the Toxoplasma parasite. They appear early in an infection but can linger for a year or more.
• TOXO-GToxoplasma gondii IgGMeasures long-lasting IgG antibodies to the Toxoplasma parasite. A positive result means past exposure, not necessarily a recent infection.
• TOXO-MToxoplasma gondii IgMLooks for IgM antibodies to the Toxoplasma parasite. They appear early in an infection but can linger for a year or more.
• TPProtein, TotalThe total amount of protein in your blood, mainly albumin and globulin. It is read together with albumin and your liver and kidney tests.
• TP-AbSyphilis Antibody, TreponemalLooks for antibodies to the bacterium that causes syphilis. It usually stays positive for life after an infection, even a treated one.
• TP-PASyphilis Antibody, TreponemalLooks for antibodies to the bacterium that causes syphilis. It usually stays positive for life after an infection, even a treated one.
• tP1NPP1NP (Procollagen Type 1 N-Terminal Propeptide)A blood marker of how fast new bone is being built. It is mostly used to follow bone treatment, not to screen healthy people.
• TPHASyphilis Antibody, TreponemalLooks for antibodies to the bacterium that causes syphilis. It usually stays positive for life after an infection, even a treated one.
• TPOAbThyroid Peroxidase Antibodies (TPO)Antibodies aimed at an enzyme in the thyroid. They are linked to autoimmune thyroid conditions such as Hashimoto's thyroiditis.
• TProtProtein, TotalThe total amount of protein in your blood, mainly albumin and globulin. It is read together with albumin and your liver and kidney tests.
• tPSAPSA, Total (Prostate-Specific Antigen)A protein made by the prostate gland. Blood levels rise with age, prostate enlargement, inflammation and sometimes prostate cancer.
• TRAbTSH Receptor Antibodies (TRAb / TBII)Antibodies that attach to the thyroid's TSH receptor. They are strongly linked to Graves' disease, an autoimmune cause of an overactive thyroid.
• Trans CellsUrine Transitional (Urothelial) Epithelial CellsA count of cells shed from the lining of your bladder and urinary tract. A few are normal.
• Trans EpiUrine Transitional (Urothelial) Epithelial CellsA count of cells shed from the lining of your bladder and urinary tract. A few are normal.
• TRIGTriglyceridesA type of fat in your blood that carries energy from food. It rises after meals, and high levels are linked to heart disease and, when very high, pancreatitis.
• TRL-CRemnant CholesterolThe cholesterol in the leftover, fat-carrying particles in your blood, worked out from your lipid panel. Higher levels are linked to more heart disease.
• TSAbThyroid Stimulating Immunoglobulin (TSI)Antibodies that stimulate the thyroid by acting like TSH. A positive result is strongly linked to Graves' disease.
• TSATTransferrin SaturationThe percentage of your blood's iron-carrying protein that is loaded with iron right now, worked out from serum iron and TIBC.
• TSBBilirubin, TotalA yellow pigment made when old red blood cells break down. Your liver clears it, so the level reflects red cell turnover and bile flow.
• TSBABile Acids, Total (fasting)Bile acids are made by the liver to digest fat. Their level in a fasting blood sample can rise when bile isn't flowing out of the liver normally.
• TSHTSH (Thyroid Stimulating Hormone)A hormone from the pituitary gland that tells your thyroid how much hormone to make. It is the test most often ordered first to check your thyroid.
• TSHR AbTSH Receptor Antibodies (TRAb / TBII)Antibodies that attach to the thyroid's TSH receptor. They are strongly linked to Graves' disease, an autoimmune cause of an overactive thyroid.
• TSIThyroid Stimulating Immunoglobulin (TSI)Antibodies that stimulate the thyroid by acting like TSH. A positive result is strongly linked to Graves' disease.
• TT3Total T3 (Triiodothyronine)Measures all the T3 in your blood, the more active thyroid hormone, including the part attached to carrier proteins.
• TT4Total T4 (Thyroxine)Measures all the thyroid hormone thyroxine in your blood, both the part attached to carrier proteins and the small free part.
• tTG IgATissue Transglutaminase (tTG) IgAA blood test for antibodies to tissue transglutaminase, a gut enzyme. It is the main blood test used when celiac disease is suspected.
• tTG IgGTissue Transglutaminase (tTG) IgGA blood test for IgG antibodies to tissue transglutaminase, a gut enzyme. It is used for celiac disease testing mainly when IgA is low or missing.
• TTRPrealbumin (Transthyretin)A protein made by the liver that carries thyroid hormone and a vitamin A complex. It falls with inflammation, so it is a weak guide to nutrition on its own.
• TVTrichomonas vaginalis NAATA test that looks for the genetic material of Trichomonas vaginalis, the parasite behind trichomoniasis, a common and curable sexually transmitted infection.
• TV NAATrichomonas vaginalis NAATA test that looks for the genetic material of Trichomonas vaginalis, the parasite behind trichomoniasis, a common and curable sexually transmitted infection.
• TV NAATTrichomonas vaginalis NAATA test that looks for the genetic material of Trichomonas vaginalis, the parasite behind trichomoniasis, a common and curable sexually transmitted infection.
• Typhi IgMSalmonella Typhi IgM (Typhoid Antibody)A blood test for IgM antibodies to the typhoid bacterium. On its own it cannot confirm typhoid fever.