RNAP - Overview: RNA Polymerase III Antibodies, IgG, Serum

Evaluating patients suspected of having systemic sclerosis as part of systemic sclerosis criteria antibody tests Providing diagnostic and prognostic information in patients with systemic sclerosis

FACT - Overview: Filamentous-Actin (F-actin) Antibody, IgG, Serum

Evaluation of patients with hepatitis of unknown origin associated with hypergammaglobulinemia and/or abnormal liver enzymes This test may also be useful for confirming positivity for smooth muscle antibodies.

HEPTP - Overview: Heparin Anti-Xa, Plasma

Measuring heparin concentration: -In patients treated with low-molecular-weight heparin preparations -In the presence of prolonged baseline activated partial thromboplastin time (APTT) (eg, lupus anticoagulant, "contact factor" deficiency,...

IHCFH - Overview: Fumarate Hydratase Immunostain, Technical Component Only

Identifying fumarate hydratase-deficient neoplasms Supporting the diagnosis of an atypical smooth muscle tumor over leiomyosarcoma

MURA - Overview: Lysozyme (Muramidase), Plasma

As a screening test for ocular sarcoidosis Confirming marked increases in the granulocyte or monocyte pools as in granulocytic or monocytic leukemias, myeloproliferative disorders, and malignant histiocytosis Following the course of...

ANCA - Overview: Cytoplasmic Neutrophil Antibodies, Serum

Evaluating patients with clinical features of ANCA-associated vasculitis, specifically granulomatosus with polyangiitis, microscopic polyangiitis, and eosinophilic granulomatosus with polyangiitis

VALPA - Overview: Valproic Acid, Total, Serum

Monitoring total valproic acid in therapy Assessing compliance Evaluating potential toxicity

YERSC - Overview: Yersinia Culture, Feces

Determining whether Yersinia species may be the cause of diarrhea Reflexive testing for Yersinia species from nucleic acid amplification test-positive feces This test is generally not useful for patients hospitalized more than 3 days...