CRDPU - Overview: Creatine Disorders Panel, Random, Urine

Evaluating patients with a clinical suspicion of arginine:glycine amidinotransferase deficiency, guanidinoacetate methyltransferase deficiency, and creatine transporter deficiency

ASYNC - Overview: Alpha-Synuclein Protein Aggregates, Spinal Fluid

Detection of pathogenic alpha-synuclein (alpha-synuclein aggregates) in adult patients being assessed for clinically uncertain cognitive decline or clinically uncertain parkinsonian syndromes

ASCL1 - Overview: Achaete-Scute Homolog 1 (ASCL1) Immunostain, Technical Component Only

Identification of the presence of achaete-scute homolog 1 (ASCL1)

APHTS - Overview: Amphiphysin Antibody Titer Assay, Serum

Evaluating patients with recent onset of a subacute neurological disorder for which a paraneoplastic basis might be suspected, particularly if the patient has a previous history, risk factors, or family history of cancer, especially lung or...

ALCU - Overview: Aluminum/Creatinine Ratio, Urine

Measurement of aluminum concentration as a part of assessing for aluminum exposure

AFPPT - Overview: Alpha-Fetoprotein (AFP), Peritoneal Fluid

An adjunct to cytology to differentiate between malignancy-related ascites and benign causes of ascites formation

ADMA - Overview: Asymmetric Dimethylarginine, Plasma

Assessing the likelihood of future coronary events in patients with coronary heart disease, type II diabetes mellitus, or kidney disease Prompting intervention and assessing improvements among subjects with elevated ADMA and...

ATRX - Overview: ATRX Immunostain, Technical Component Only

Distinguishing differentiated from undifferentiated neoplasms

ALKOT - Overview: Anaplastic Lymphoma Kinase (ALK [OTI1A4]) Immunostain, Technical Component Only

Identification of anaplastic lymphoma kinase overexpression Diagnosis of inflammatory myofibroblastic tumor and anaplastic large cell lymphoma

RA1U - Overview: Alpha-1-Microglobulin, Random, Urine

Assessment of renal tubular injury or dysfunction using random urine specimens Screening for tubular abnormalities Detecting chronic asymptomatic renal tubular dysfunction (2)