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Tests
Red blood cell (RBC) indices measure your red blood cells' size, shape, and quality. Red blood cells are also known as erythrocytes. They are made in your bone marrow (the spongy tissue inside your large bones). They contain hemoglobin, an iron-rich protein in your red blood cells that carries oxygen from your lungs to every cell in your body. Your cells need oxygen to grow, reproduce, and make energy.
Tests
This test measures the level of renin in your blood. Renin is an enzyme, a protein that speeds up certain chemical reactions in your body. It's made by your kidneys. When your blood pressure or sodium decreases or your potassium increases, your kidneys release renin. That's because renin also acts as a hormone (a chemical messenger in your bloodstream that controls the actions of certain cells or organs) to help control your blood pressure.
Tests
The determination of the amount of retinol binding protein 1 in a sample.
Tests
The determination of the amount of retinol binding protein 2 in a sample.
Tests
The determination of the amount of retinol binding protein 4 in a sample.
Tests
The determination of the amount of retinol binding protein present in a sample.
Tests
The determination of the ratio of retinol binding protein compared to creatinine present in a sample. The measurement may be expressed as a ratio or percentage.
Tests
A rheumatoid factor (RF) test checks a sample of your blood for rheumatoid factor, a protein made by the immune system .
Tests
The determination of the amount of SARS-CoV-2 spike protein antibody in a sample.
Tests
The determination of the amount of SH2 domain containing 1A protein present in a sample.
Tests
An SHBG blood test measures the level of a protein called sex hormone binding globulin (SHBG) in a sample of your blood. SHBG is made mostly in your liver. It binds (attaches) to sex hormones such as testosterone and estrogen and helps control how much of these hormones are active in your body.
Tests
A stool elastase test measures the amount of elastase in your stool (poop). Elastase is a type of digestive enzyme, a protein that speeds up certain chemical reactions in your body. The pancreas, a gland that sits behind your stomach, makes these digestive enzymes to help your body break down food and absorb nutrients. Your body can then use these nutrients for energy, growth, and repairing cells.
