A complete blood count and differential (CBCD) will not show up an endocrine disorder. Endocrine blood tests for specific hormones are required to do so. These tests are generally quite good at detect ing...
Breathlessness is usually a symptom of lung disease (e.g. asthma and chronic obstructive pulmonary disease)or heart disease. These conditions often co-exist in patients with musculoskeletal disease li ke...
Cancer does not necessarily show up in blood tests. Some cancers, like leukemia, may be diagnosed on a CBC, but in general a "normal" CBC cannot exclude cancer, while an abnormal test can't confirm it either...