GAST - Overview: Gastrin, Serum

Investigation of patients with achlorhydria or pernicious anemia Investigation of patients suspected of having Zollinger-Ellison syndrome Diagnosis of gastrinoma

HIAA - Overview: 5-Hydroxyindoleacetic Acid, 24 Hour, Urine

Biochemical diagnosis and monitoring of intestinal carcinoid syndrome using 24-hour urine specimens

25HDN - Overview: 25-Hydroxyvitamin D2 and D3, Serum

Diagnosis of vitamin D deficiency Differential diagnosis of causes of rickets and osteomalacia Monitoring vitamin D replacement therapy Diagnosis of hypervitaminosis D

EOIBD - Overview: Early Onset Monogenic Inflammatory Bowel Disease (IBD) Gene Panel, Varies

Providing a comprehensive genetic evaluation for patients with a personal or family history suggestive of an inherited inflammatory bowel disorder Establishing a diagnosis of a monogenic early onset inflammatory bowel disease, allowing for...

META3 - Overview: Metanephrines with 3-Methoxytyramine, 24 Hour, Urine

A first- and second-tier screening test for the presumptive diagnosis of catecholamine-secreting pheochromocytomas and paragangliomas

ANST - Overview: Androstenedione, Serum

Diagnosis and differential diagnosis of hyperandrogenism, in conjunction with measurements of other sex steroids Diagnosis of congenital adrenal hyperplasia (CAH), in conjunction with measurement of other androgenic precursors,...

E1 - Overview: Estrone, Serum

As part of the diagnosis and workup of precocious and delayed puberty in females and, to a lesser degree, males As part of the diagnosis and workup of suspected disorders of sex steroid metabolism (eg, aromatase deficiency and 17...

PERAM - Overview: Perampanel, Serum

Monitoring serum concentration of perampanel, in specific clinical conditions (ie, severe kidney impairment, mild to moderate hepatic impairment, and end-stage kidney disease) Assessing compliance Assessing potential toxicity

SVISC - Overview: Viscosity, Serum

Detection of increased viscosity Monitoring patients with hyperviscosity syndrome This test is not useful for patients with small concentrations of monoclonal proteins.

FELBA - Overview: Felbamate (Felbatol), Serum

Determining whether a poor therapeutic response is attributable to noncompliance or lack of drug effectiveness Monitoring changes in serum concentrations resulting from interactions with coadministered drugs such as barbiturates and...