The Terminology- SNOMED CTÂ®, an Evolving Clinical Reference Terminology. SNOMEDÂ® is the Systemized Nomenclature of Medicine. It is a controlled medical terminology (CMT). At its simplest, a SNOMED is a coded vocabulary of medical concepts and expressions used in healthcare.
The partial thromboplastin time (PTT) is a screening test that helps evaluate a person's ability to appropriately form blood clots. It measures the number of seconds it takes for a clot to form in a person's sample of blood after substances (reagents) are added.
An HCT blood test is performed as part of a CBC, or complete blood count. Learn why the doctor orders this test and how the results help in diagnosing medical conditions. slide 1 of 6. The HCT, which stands for hematocrit, blood test measures the amount of red blood cells in a blood sample.This test is also referred to as a crit or a PCV, which means packed cell volume. The HCT blood test is usually done as part of a CBC, or complete blood count, blood test.nemia is the most common cause of a low hematocrit result. Anemia occurs when the body has a below normal amount of red blood cells. This causes a hematocrit levels fall below normal. Malnutrition or nutritional deficiencies of certain vitamins or minerals can lead to anemia and produce low HCT blood test results.