High Ferritin Blood Test: Causes, Inflammation, Iron Overload, and Meaning
Ferritin is a protein that stores iron inside your cells, and a ferritin blood test gives a rough picture of how much stored iron...
High Folate Blood Test: Causes, Supplements, B12 Masking, and Meaning
A high folate blood test usually means there is more folate circulating in your blood than the lab expects, most often from supplements, prenatal...
High Hepcidin Blood Test: Causes, Inflammation, Iron Restriction, and Meaning
A high hepcidin blood test usually means the body is holding iron back from the bloodstream. Hepcidin is a hormone made mainly by the...
High Iodine Blood Test: Causes, Excess Intake, Thyroid Risk, and Meaning
A high iodine blood test usually means there has been recent or ongoing iodine exposure from supplements, iodine-rich foods, medicines, antiseptics, or iodinated contrast....
High Magnesium Blood Test: Causes, Kidney Disease, Toxicity, and Meaning
A high magnesium blood test means the amount of magnesium circulating in the blood is above the lab’s reference range. Mild elevations are often...
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...