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.
Does a normal PTT blood test mean low risk for developing blood clots? What is a partial thromboplastin time blood test? Anyone know what is a partial thromboplastin time blood test in easy to understand terms? Dr wanted to test for lupus. Blood work came back normal minus ptt which was 3 seconds longer the. Normal range. Do I have lupus?