RNP - Overview: RNP Antibodies, IgG, Serum

Evaluating patients with signs and symptoms of a connective tissue disease in whom the test for antinuclear antibodies is positive Testing for ribonucleoprotein particle antibodies is not useful in patients without demonstrable...

T3 - Overview: T3 (Triiodothyronine), Total, Serum

Second-order testing for hyperthyroidism in patients with low thyroid-stimulating hormone values and normal thyroxine levels Diagnosing triiodothyronine (T3) toxicosis This test is not useful for general screening of the population...

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...

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...

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

Aiding the diagnosis of Western equine encephalitis using serum specimens

DHVD - Overview: 1,25-Dihydroxyvitamin D, Serum

As a second-order test in the assessment of vitamin D status, especially in patients with renal disease Investigation of some patients with clinical evidence of vitamin D deficiency (eg, vitamin D-dependent rickets due to hereditary...

SFUNG - Overview: 1,3-Beta-D-Glucan (Fungitell), Serum

Aiding in the diagnosis of invasive fungal infections caused by various fungi, including Aspergillus species, Fusarium species, Candida species, and Pneumocystis jirovecii, among others

VITAE - Overview: Vitamin A and Vitamin E, Serum

Diagnosing vitamin A deficiency and toxicity Evaluating persons with intestinal malabsorption of lipids Monitoring of Vitamin E supplementation/treatment

VH - Overview: Vanillylmandelic Acid and Homovanillic Acid, Random, Urine

Preferred first test for screening for catecholamine-secreting tumors in a random urine specimen when requesting both homovanillic acid and vanillylmandelic acid Supporting a diagnosis of neuroblastoma Monitoring patients with a treated...