Low Iodine Blood Test: Causes, Thyroid Function, Deficiency, and Meaning
A low iodine blood test result can point toward low iodine intake, but it needs careful interpretation. Iodine is a trace mineral the thyroid...
Low Magnesium Blood Test: Causes, Deficiency, Symptoms, and Meaning
A low magnesium blood test means the amount of magnesium circulating in your blood is below the lab’s reference range. Magnesium is an electrolyte...
Low Manganese Blood Test: Causes, Deficiency, Nutrition, and Meaning
A low manganese blood test means the measured manganese level in the sample is below that laboratory’s reference range. Manganese is an essential trace...
Low Molybdenum Blood Test: Causes, Deficiency, and Meaning
A low molybdenum blood test means the measured amount of molybdenum in blood, serum, or plasma is below the laboratory’s reference range. Molybdenum is...
Low Osteocalcin Blood Test: Causes, Bone Formation, and Meaning
Osteocalcin is a protein made mainly by osteoblasts, the cells that build new bone. A low osteocalcin blood test usually points to low bone...
Low Phosphorus Blood Test: Causes, Symptoms, Mineral Balance, and Meaning
A low phosphorus blood test means the amount of phosphate circulating in the blood is below the lab’s reference range. Phosphorus is a mineral...
Low Selenium Blood Test: Causes, Deficiency, Thyroid Health, and Meaning
A low selenium blood test means your measured selenium level is below the reference range used by the lab, or below the level expected...
Low Serum Iron and Normal Ferritin: What the Pattern Can Mean
Low serum iron with normal ferritin usually means there is less iron moving through the bloodstream, while the storage marker has not fallen below...
Low Serum Iron Test: Causes, Iron Deficiency, Anemia, and Meaning
Low serum iron means the amount of iron circulating in the blood is below the lab’s reference range at the time your blood was...
Low Total Iron-Binding Capacity (TIBC) Test: Causes, Inflammation, Liver Disease, and Meaning
A low total iron-binding capacity, or low TIBC, usually means the blood has less transferrin available to carry iron. Transferrin is a liver-made protein...
Low Transferrin Blood Test: Causes, Inflammation, Liver Disease, and Meaning
Transferrin is the main protein that carries iron through the blood. A low transferrin result usually means the body has less iron-transport capacity than...
Low Transferrin Saturation (TSAT) Test: Causes, Iron Deficiency, Anemia, and Meaning
Low transferrin saturation, often shortened to low TSAT, means only a small share of the iron-carrying protein transferrin is carrying iron in the blood....
Low Unsaturated Iron-Binding Capacity (UIBC) Test: Causes, Iron Overload, and Meaning
A low unsaturated iron-binding capacity, or low UIBC, means there is less unused transferrin available to bind iron in your blood. Transferrin is the...
Low Vitamin A (Retinol) Test: Causes, Deficiency, Symptoms, and Meaning
A low vitamin A test usually means the blood level of retinol, the main circulating form of vitamin A, is below the lab’s reference...
Low Vitamin B6 (Pyridoxal-5-Phosphate/PLP) Test: Causes, Deficiency, and Meaning
A low vitamin B6 blood test usually means the active form of vitamin B6, pyridoxal-5-phosphate, is below the level your body needs for normal...
Low Vitamin B12 Blood Test: Causes, Deficiency, Anemia, and Meaning
A low vitamin B12 blood test means the amount of vitamin B12, also called cobalamin, in your blood is below the lab’s expected range....
Low Vitamin E (Alpha-Tocopherol) Test: Causes, Deficiency, and Meaning
A low vitamin E blood test means the measured alpha-tocopherol level in the blood is below the lab’s reference range. Alpha-tocopherol is the main...
Low Zinc Blood Test: Causes, Deficiency, Symptoms, and Meaning
A low zinc blood test means the measured zinc level in serum, plasma, or whole blood is below the laboratory’s reference range. Zinc is...
Magnesium Blood Test Normal Range: Reference Values and Meaning
A magnesium blood test measures how much magnesium is circulating in the liquid part of your blood, usually reported as serum magnesium. Magnesium helps...
Manganese Blood Test Normal Range: Reference Values and Meaning
A manganese blood test measures the amount of manganese, an essential trace mineral, circulating in the blood. The test is used most often when...