Final answer:
The laboratory value that should be reported to the provider for medications used in the treatment of Bipolar Disorders is serum lithium level.
Step-by-step explanation:
The laboratory value that should be reported to the provider for medications used in the treatment of Bipolar Disorders is serum lithium level. Serum lithium levels are monitored because lithium is commonly used to treat Bipolar Disorders, and maintaining the correct therapeutic range is important for its effectiveness and safety.