<s>[INST] tell me in sort about ca 19 9 is reported increase then normal range patient is vomating blood in his is stool is black [/INST] Hello, having blood in vomitus and also black stool is a symptom of having an internal (gastrointestinal)bleed. Which could be due to increased analgesic use, alcohol, stress.This has to be dealt with in the hospital only, by gastro team or ICU team. </s>