Serial Therapeutic and Antifungal Monitoring Protocol

Inclusion Criteria: * Subject or subject's authorized representative must be able to understand, read and sign the study specific informed consent form after the nature of the study has been fully explained to them. * Subject is between 18-95 years of age * Subject has a blood culture result that is positive for yeast within 36 hours of enrollment Exclusion Criteria: * Subject has other co-morbid condition(s) that, in the opinion of the Investigator, could limit the subject's ability to participate in the study or impact the scientific integrity of the study * All T2 Bio individual clinical research specimens contain \< 3 ml of blood * Use of any novel (i.e. not commercially available) drug compound within 30 days prior to the collection of T2 Bio blood specimens.