Checking your blood sugar can feel like a major inconvenience—not to mention, if you’re using a finger-stick test, it can hurt, too. Yet, monitoring your glucose level is key for good diabetes ...

What Does a Hematocrit Test Measure? A hematocrit test is a blood test that measures the level of red blood cells in your blood. Your blood is made up of plasma and blood cells. Plasma is the liquid ...

Immunoglobulins, or antibodies, are produced by white blood cells. They help your body defend against infections and conditions like cancer. Tests measure them and help diagnose these medical ...

Blood draws for several kinds of diagnostic tests require you to fast for several hours. Eating or drinking anything besides water can skew the results, leading to you needing to be retested. You may ...

Researchers have recently created a blood test that can detect liver disease years before symptoms ever develop, helping pave ...

Blood sugar checks are essential for the diagnosis and treatment of every form of diabetes. “Glucose monitoring is critical for preventing short-term and long-term complications of diabetes,” says ...

No single blood test can diagnose liver cancer, but liver cancer blood tests can detect signs of liver dysfunction. Depending on a person’s signs and symptoms, a doctor may recommend further testing, ...

A complement C4 (also known as a complement component 4, or simply C4) is a test to measure the level of C4 proteins you have in your blood. These proteins play a role in how your immune system ...

Lactose intolerance is an inability to digest a type of sugar found in milk and dairy products. Breath, blood, and stool tests are types of lactose intolerance tests that can measure the body’s ...

A vitamin B12 blood test is a reliable way to determine if you have adequate levels of this crucial nutrient. Vitamin B12 is ...

A new paper describes a test that can differentiate between different types of asthma via a nasal swab. Researchers hope the test can eventually be used to help match patients with better treatments.