High Manganese Blood Test: Causes, Exposure, Toxicity, and Meaning
A high manganese blood test means there is more manganese circulating in the blood than expected for the lab’s reference range. Manganese is an...
High Molybdenum Blood Test: Causes, Excess Intake, and Meaning
Molybdenum is an essential trace mineral, but the body needs only tiny amounts. A high molybdenum blood test means the measured level is above...
High Osteocalcin Blood Test: Causes, Bone Turnover, and Meaning
Osteocalcin is a protein made mainly by osteoblasts, the cells that build new bone. When a blood test shows high osteocalcin, it usually means...
High Phosphorus Blood Test: Causes, Kidney Disease, Bone Health, and Meaning
A high phosphorus blood test means there is more phosphate in the blood than expected. Phosphate is the form of phosphorus measured in blood,...
High Selenium Blood Test: Causes, Toxicity, Excess Intake, and Meaning
A high selenium blood test usually means your recent selenium intake is higher than expected, most often from supplements, frequent Brazil nut intake, or...
High Serum Iron Test: Causes, Iron Overload, Liver Disease, and Meaning
A high serum iron result means the amount of iron circulating in the blood was above the lab’s reference range at the time your...
High Total Iron-Binding Capacity (TIBC) Test: Causes, Iron Deficiency, Pregnancy, and Meaning
A high total iron-binding capacity (TIBC) test usually means your blood has more available iron-carrying capacity than expected. In everyday terms, your body has...
High Transferrin Blood Test: Causes, Iron Deficiency, Pregnancy, and Meaning
A high transferrin blood test usually means the body has increased its iron-carrying capacity. Transferrin is a protein made mainly by the liver, and...
High Transferrin Saturation (TSAT) Test: Causes, Iron Overload, Hemochromatosis, and Meaning
Transferrin saturation, often shortened to TSAT, shows how much of the blood’s iron-carrying capacity is currently filled with iron. A high TSAT result can...
High Unsaturated Iron-Binding Capacity (UIBC) Test: Causes, Iron Deficiency, and Meaning
Unsaturated iron-binding capacity, or UIBC, shows how much spare iron-carrying capacity remains in your blood. A high UIBC usually means many transferrin binding sites...
High Vitamin A (Retinol) Test: Causes, Toxicity, Symptoms, and Meaning
A high vitamin A blood test means the retinol level in the blood is above the laboratory’s reference range. This can happen after taking...
High Vitamin B6 (Pyridoxal-5-Phosphate/PLP) Test: Causes, Toxicity, Neuropathy, and Meaning
A high vitamin B6 blood test usually means the level of pyridoxal-5-phosphate, often shortened to PLP or P5P, is above the laboratory’s reference range....
High Vitamin B12 Blood Test: Causes, Supplements, Liver Disease, and Meaning
A high vitamin B12 blood test result usually means there is more B12 circulating in the blood than the lab expects, but it does...
High Vitamin E (Alpha-Tocopherol) Test: Causes, Excess Intake, Bleeding Risk, and Meaning
A high vitamin E blood test usually means there is more alpha-tocopherol circulating in the blood than expected for the lab’s reference range. The...
High Zinc Blood Test: Causes, Toxicity, Copper Deficiency, and Meaning
A high zinc blood test means the amount of zinc measured in serum, plasma, or whole blood is above the laboratory’s reference range. Zinc...
Holotranscobalamin Test: Active Vitamin B12, Low Levels, Deficiency, and Results
Holotranscobalamin is often called “active vitamin B12” because it measures the portion of vitamin B12 attached to transcobalamin, the transport protein that helps deliver...
Homocysteine and MMA: Interpreting B12, Folate, and Methylation Markers
Homocysteine and methylmalonic acid, usually called MMA, are functional blood markers. They do not simply show how much vitamin B12 or folate is floating...
Homocysteine Blood Test: High Homocysteine, B Vitamin Deficiency, Heart Risk, and Results
A homocysteine blood test measures the amount of homocysteine in your blood. Homocysteine is an amino acid made during normal protein metabolism, and your...
Iodine Blood Test Normal Range: Reference Values and Meaning
An iodine blood test measures iodine in serum or plasma, the liquid part of blood. Iodine is a trace mineral your thyroid uses to...
Iron Panel Test: Ferritin, Serum Iron, TIBC, Transferrin Saturation, Iron Deficiency, and Results
An iron panel is a group of blood tests that shows how much iron is available in the blood, how much is stored, and...