VMAR - Overview: Vanillylmandelic Acid, Random, Urine

Screening children for catecholamine-secreting tumors using a random urine collection when requesting vanillylmandelic acid only Supporting a diagnosis of neuroblastoma Monitoring patients with a treated neuroblastoma

VZVPV - Overview: Varicella-Zoster Virus, Molecular Detection, PCR, Varies

Rapid (qualitative) detection of varicella-zoster virus DNA in clinical specimens for laboratory diagnosis of disease due to this virus This test should not be used to screen asymptomatic patients.

VWAG - Overview: von Willebrand Factor Antigen, Plasma

Diagnosis of von Willebrand disease (VWD) and differentiation of VWD subtype (in conjunction with von Willebrand factor ristocetin cofactor activity and factor VIII coagulant activity) Differentiation of VWD from hemophilia A (in...

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.

VWD8B - Overview: von Willebrand Disease 2N (Subtype Normandy), Plasma

Diagnosing von Willebrand disease (VWD) type 2N Evaluating patients diagnosed with mild-to-moderate hemophilia A with an autosomal inheritance pattern Evaluating hemophilia A patients with a shortened survival of infused factor VIII...

VITAP - Overview: Vitamin A, Serum

Diagnosing vitamin A deficiency and toxicity as a part of a profile Monitoring vitamin A therapy

AVWPQ - Overview: von Willebrand Disease Profile Interpretation

Interpretation of testing performed as part of a profile for detection of deficiency or abnormality of von Willebrand factor (VWF) and related deficiency of factor VIII coagulant activity Interpretation of testing performed as part of a...

FBIOT - Overview: Vitamin B7, H (Biotin)

Vitamin B7, H (Biotin)

VIGA - Overview: Vigabatrin (Sabril)

Vigabatrin (Sabril)

VANTA - Overview: Vancomycin, Trough, Serum

Preferred test for monitoring vancomycin therapy Monitoring trough concentrations drawn at steady-state in selected patients receiving vancomycin therapy