Apparatus and method to determine stroke subtype

An apparatus to determine stroke subtype selected from acute ischemic stroke subtype and hemorrhagic stroke subtype, the system comprising:

• operably coupled a transformative apparatus, a sensor and a processor;
• the transformative apparatus being configured to excite a whole blood test sample to cause transformation of the whole blood test sample through thrombelastography;
• the sensor being configured relative to the transformative apparatus to measure a physical characteristic of the whole blood test sample during transformation and to provide data representative of the physical characteristic;
• and
• the processor being configured to control operation of the transformative apparatus to effect transformation of the whole blood test sample and to receive the data, the processor being further configured to determine a stroke index based at least on the data and to provide a stroke subtype indication based on a relationship of the stroke index to a set of cutoff values, wherein the stroke subtype indication is one of ischemic stroke subtype and hemorrhagic stroke subtype.