Find the right blood test for you.

Detects Trichomonas vaginalis, a sexually transmitted parasite. Detecting its genetic material is considerably more sensitive than examining a sample under a microscope. View details →

Measures free T3, the unbound portion of the active thyroid hormone. Useful when an overactive thyroid is suspected but free T4 is still normal. View details →

Measures tryptase, an enzyme released by mast cells. Can help assess anaphylaxis when measured soon after an episode, and mast cell disorders when measured at baseline. View details →

Measures TNF-alpha, a signaling protein central to the inflammatory response. Used mainly in specialist assessment and research rather than routine practice. View details →

Measures uric acid, a waste product from breaking down purines. Raised levels can cause gout and kidney stones, and are associated with metabolic conditions. View details →

Measures vitamin A as retinol. Vitamin A is needed for vision, immune function and skin, and testing can help assess both deficiency and excess. View details →

Measures vitamin B12, needed for red blood cell production and nerve function. Deficiency causes anemia and can cause nerve damage that may not fully reverse. View details →

Measures thiamine, or vitamin B1, in whole blood. Thiamine is needed to convert carbohydrate into energy, and deficiency affects the nerves and heart. View details →

Measures riboflavin, also known as vitamin B2, which the body uses to release energy from food and to maintain skin, eye and nerve function. Can help assess a suspected deficiency. View details →

Measures vitamin B6 as pyridoxal 5-phosphate, its active form. B6 is involved in protein metabolism and nerve function, and both deficiency and excess cause problems. View details →

Measures vitamin C, needed to make collagen and to absorb iron from plant sources. Severe deficiency causes scurvy, which still occurs with very restricted diets. View details →

Measures vitamin D as 25-hydroxyvitamin D, the standard measure of vitamin D status. Vitamin D is needed for calcium absorption and bone strength. View details →