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Tests
Erythrocytes are red blood cells. The sedimentation rate is the time it takes for your red blood cells to settle at the bottom of a test tube. An erythrocyte sedimentation rate (ESR) is a blood test that can show if you have inflammation in your body. Inflammation is your immune system's response to injury, infection, and many other conditions, including immune system disorders , certain cancers , and blood disorders .
Tests
Estimated glomerular filtration rate (eGFR) and GFR tests check how well your kidneys are working. Your kidneys are two organs on either side of your spine just below your rib cage. They have tiny filters called glomeruli. These filters remove waste and extra water from your blood and get rid of them through your urine (pee).
Tests
An estrogen test measures the level of estrogens in a sample of your blood, urine (pee), or saliva (spit).
Tests
If your health care provider has told you to fast before a blood test, it means you should not eat or drink anything, except plain water, for several hours before your test. While you're fasting for a blood test, you should also not :
Tests
A stool test detecting hidden blood from the lower bowel; the main screening entry point for colorectal cancer programmes.
Tests
A ferritin blood test measures the level of ferritin in your blood. Ferritin is a protein that binds to iron and stores it in your body. You need iron to make healthy red blood cells. Red blood cells carry oxygen from your lungs to the rest of your body. Iron is also important for healthy muscles, bone marrow, and organs, including brain development in children.
Tests
This test measures the level of follicle-stimulating hormone (FSH) in a sample of your blood. A hormone is a chemical messenger in your bloodstream that controls the actions of certain cells or organs. FSH plays an important role in sexual development in children and fertility in adults.
Tests
A free light chains test measures the level of free light chains in your blood. Light chains are proteins made by plasma cells, a type of white blood cell. Light chains usually link up with other proteins called heavy chains. Together, the light and heavy chains make immunoglobulins, also called antibodies. Antibodies are proteins that your immune system makes to fight germs such as viruses and bacteria .
Tests
This test measures the amount of G6PD in your blood. G6PD stands for glucose-6-phosphate dehydrogenase. It's an enzyme, a protein that speeds up certain chemical reactions in your body. It helps your red blood cells work properly. Red blood cells move oxygen from your lungs to every cell in your body. Your cells need oxygen to grow, reproduce, and stay healthy.
Tests
A galactosemia test is a blood test given to newborns to check for a rare genetic metabolic disorder called galactosemia. Metabolic disorders affect metabolism, the process your body uses to make energy from the food you eat. Galactosemia can be inherited (passed down through families), but to have the condition, your baby has to receive the gene from both parents. Genes are parts of DNA in your cells that you inherit from your parents. You inherit two copies of each gene, one from each parent.
Tests
A gamma-glutamyl transferase (GGT) test measures the amount of GGT in your blood GGT is an enzyme. Enzymes are proteins that speed up certain chemical reactions in your body. Thousands of enzymes play an important role in all of your body functions. The GGT enzyme is found throughout your body, but it is mainly found in your liver.
Tests
Globulins are a group of proteins in your blood. Some globulins are made by your liver. Others are made by your immune system . Globulins play an important role in liver and kidney function, blood clotting, and fighting infection. There are different types of globulins called alpha, beta, and gamma globulins. Tests to measure globulins include:
