| |
Blood volume/Plasma volume |
| Test | Blood volume/Plasma volume |
| Indication | The test measures the patient's total circulating volume of blood and/or fractions of the blood volume. |
| Physiology | A component of the blood (e.g., Albumin) is labeled using a radioisotope. The dilution of the label is inversely proportional to the size (Volume) of the compartment in which it has been diluted. |
| Normal Range | Click Here To View Normal Values |
| Interpretation | This test differentiates relative from absolute polycythemia. Polycythemia is increased red cells and is opposite to anemia. Polycythemia is usually considered when hemoglobin is 18g/dL, hematocrit is 52% and RBC count is 6 million/mm3. |
| Test Results | Dilution Technique using 125I – tagged albumin and/or 51Cr-tagged Red Blood Cells. |
| Related Tests | Erythropoietin Test, Hematocrit Test, Peripheral Blood, Red Cell Mass. |
| ï previous | |