Coughing up of blood isnot a good sign. You should take care and had to do certain labs that include workup for Tuberculosis
and Bronchopulmonary carcinoma. You should do CT scan
of the chest and Sputum culture
and Mantoux test
. If needed further investigation you should have Biopsy of lung for diagnostic purpose.
Repeat your all labs that include Blood CP, PT INR, and workup for Tuberculosis and cancer.
I hope I am sucessful in solving your query If u have further you can ask me
Get well soon
Dr. Azhar Sattar