HIV: Laboratory Testing for Screening, Diagnosis, and Management  This test guide provides an overview of the use of laboratory tests in the screening, diagnosis, and management of HIV based on clinical practice guidelines.

Immune-Mediated Peripheral Neuropathies: Laboratory Support of Diagnosis  This clinical focus provides information on laboratory testing that supports evaluation and diagnosis of immune-mediated causes of primary peripheral neuropathy, including Guillain-Barre syndrome (GBS) or acute inflammatory demyelinating polyradiculoneuropathy (AIDP), chronic inflammatory demyelinating polyradiculoneuropathy (CIDP), and autoimmune nodopathy.

Polycystic Ovary Syndrome (PCOS)  This Clinical Focus provides information on tests available for the differential diagnosis of polycystic ovary syndrome (PCOS) and the identification of common comorbidities.