What is hematocrit?
Hematocrit is a blood test that measures the percentage of red blood cells in your total blood volume, expressed as a percentage.
Your hematocrit is the percentage of your blood made up of red blood cells. A lab technician draws blood, spins it in a centrifuge, and measures how much of the sample settles as packed red cells versus plasma. Normal ranges for adult men fall between 41 and 50 percent, though ranges can vary slightly between labs.
Testosterone replacement therapy increases red blood cell production through stimulation of erythropoietin in the kidneys. Higher red cell counts mean a higher hematocrit reading. While some increase is expected and often beneficial for oxygen delivery, excessively elevated hematocrit (above 55 percent) can thicken the blood and raise the risk of clotting, stroke, or heart attack, a condition called polycythemia.
Florida TRT clinics monitor hematocrit regularly through routine blood panels, typically checking it every 3 to 6 months after starting therapy and periodically during ongoing treatment. If your hematocrit climbs too high, your provider may reduce your testosterone dose, adjust your injection frequency, or recommend blood donation to bring levels back into a safe range. Finding a clinic that tracks hematocrit as part of standard protocol is important for safe therapy. You can locate Florida providers offering lab diagnostics and monitoring through the directory.