Find the right blood test for you.

Measures methylmalonic acid, which rises when vitamin B12 is insufficient at the cellular level. Can help confirm a B12 deficiency when a B12 result is borderline. View details →

Measures molybdenum, a trace mineral the body needs in very small amounts for several enzyme reactions. Deficiency is rare, and testing is uncommon outside specific situations. View details →

Detects Mycoplasma genitalium, a sexually transmitted bacterium that can cause urethritis and cervicitis. Often tested when symptoms persist after treatment for other infections. View details →

Measures antibodies to myeloperoxidase, one of the ANCA antibodies. Can help assess forms of vasculitis, in which blood vessels become inflamed. View details →

Measures myeloperoxidase, an enzyme released by white blood cells during inflammation. Used as an additional marker when assessing cardiovascular risk. View details →

Measures NT-proBNP, released when the heart is under strain. Can help assess whether breathlessness is due to heart failure, and is used to monitor known heart failure. View details →

Measures oxidized LDL, the modified form of LDL involved in plaque formation in artery walls. Used as an additional marker in cardiovascular risk assessment. View details →

Measures phosphate in the blood, reported as phosphorus. Phosphate works closely with calcium in bone, and levels are regulated by the kidneys and parathyroid hormone. View details →

Measures potassium in the blood, an electrolyte essential for nerve signals, muscle contraction and heart rhythm. Levels outside the normal range can affect the heart. View details →

Measures pregnenolone, the steroid the body makes from cholesterol and uses as the starting point for other steroid hormones. Used mainly in specialist hormone assessment. View details →

Measures P1NP, a fragment released when new bone is formed. Can help assess bone building and monitor response to osteoporosis treatment. View details →

Measures progesterone, the hormone released after ovulation that prepares the uterine lining for pregnancy. Commonly used to confirm that ovulation has occurred. View details →