T4 - Overview: T4 (Thyroxine), Total Only, Serum

Monitoring treatment with synthetic hormones (synthetic T3 [triiodothyronine] will cause a low total T4 [thyroxine]) Monitoring treatment of hyperthyroidism with thiouracil and other anti-thyroid drugs Index of thyroid function when the...

MAMMX - Overview: 6-Monoacetylmorphine (6-MAM) Confirmation, Chain of Custody, Meconium

Detecting in utero heroin exposure up to 5 months before birth Chain of custody is required whenever the results of testing could be used in a court of law. Its purpose is to protect the rights of the individual contributing the specimen...

TGQN - Overview: Thyroglobulin, Tumor Marker, Serum

Quantitative thyroglobulin measurement as a part of evaluating suspected interference from heterophile antibodies causing a falsely elevated thyroglobulin result

WNVBL - Overview: West Nile Virus, RNA, PCR, Molecular Detection, Blood

Rapid testing for West Nile virus (WNV) RNA (lineage 1 and lineage 2) An adjunctive test to serology for detection of early WNV infection (ie, first few days after symptom onset), with blood specimens potentially providing a greater...

WNVUR - Overview: West Nile Virus, RNA, PCR, Molecular Detection, Random, Urine

Rapid testing for West Nile virus (WNV) RNA (lineage 1 and lineage 2) An adjunctive test to serology for detection of early WNV infection (ie, first few days after symptom onset), with urine specimens potentially retaining WNV RNA longer...

VLCZ - Overview: Very Long Chain Acyl-CoA Dehydrogenase Deficiency, Full Gene Analysis, Varies

Confirmation of a diagnosis of very long chain acyl-CoA dehydrogenase (VLCAD) deficiency Carrier screening in cases where there is a family history of VLCAD deficiency, but an affected individual is not available for testing or...

WEEP - Overview: Western Equine Encephalitis Antibody, IgG and IgM, Serum

Aiding the diagnosis of Western equine encephalitis using serum specimens

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...

7AC4 - Overview: 7AC4, Bile Acid Synthesis, Serum

Screening for bile acid malabsorption in patients with irritable bowel syndrome with diarrhea

DCORT - Overview: 11-Deoxycortisol, Serum

Diagnostic workup of patients with congenital adrenal hyperplasia Part of metyrapone testing in the workup of suspected secondary or tertiary adrenal insufficiency Part of metyrapone testing in the differential diagnostic workup of...