Useful for screening children for catecholamine-secreting tumors with a 24-hour urine collection when requesting testing for only vanillylmandelic acid, for supporting a diagnosis of neuroblastoma, and for monitoring patients with a treated neuroblastoma.
Urine
24 Hour Urine Jug (1)
None
None
Discontinue L-dopa 24 HR before collection.
REFRIGERATE (28 Days)
5 Days
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Useful in the determination of immune status of individuals to the varicella-zoster virus (VZV) and documentation of previous infection with VZV in an individual without a previous record of immunization to VZV.
Measures the amount of vascular endothelial growth factor (VEGF) in your blood. VEGF is a substance that helps encourage the growth of new blood vessels.
Plasma
EDTA (1)
None
None
Immediately after collection, place tube on wet ice. Centrifuge for 10 minutes and freeze plasma within 30 minutes.
Useful for assessment of thiamine deficiency when measuring levels in patients with behavioral changes, eye signs, gait disturbances, delirium, and encephalopathy. Also useful for patients with questionable nutritional status, especially those who appear at risk and who also are being given insulin for hyperglycemia.
Whole Blood
EDTA (1)
None
None
Transfer 2.0 mL whole blood to amber vial and freeze. PROTECT FROM LIGHT. CRITICAL FROZEN. (Pour off using Amber Vial)
Useful for the diagnosis and evaluation of hypophosphatasia or determining the overall success of a vitamin B6 supplementation program.
Plasma
EDTA (1)
Serum
SST (1)
Fasting required (12 HR). PT must not consume alcohol for at least 24 HR prior to collection. Collect infant samples before next feeding. CRITICAL FROZEN. PROTECT FROM LIGHT. (Pour off using Amber Vial)
Useful for the diagnosis of Vitamin D deficiency, differential diagnosis of causes of rickets and osteomalacia, monitoring Vitamin D replacement therapy, and/or diagnosis of hypervitaminosis D.
Useful for evaluation of individuals with motor and sensory neuropathies, monitoring vitamin E status of premature infants requiring oxygenation, and for evaluation of persons with intestinal malabsorption of lipids.
Serum
SST (1)
None
None
Fasting required (12 HR). Collect infant samples before next feeding. PROTECT FROM LIGHT. (Pour off using Amber Vial)
REFRIGERATE (44 Days) PFL
6 Days
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Useful for the assessment of circulating vitamin K concentration.
Serum
SST (1)
Plasma
EDTA (1)
Fasting required (12 HR). PT must not consume alcohol for at least 24 HR prior to collection. CRITICAL FROZEN. PROTECT FROM LIGHT. (Pour off using Amber Vial)
Useful for the detection of deficiency or abnormality of von Willebrand factor (VWF) and related deficiency of factor VIII coagulant activity and Subtyping von Willebrand disease (VWD) as type 1 (most common), type 2 variants (less common), or type 3 (rare).
Plasma
Lt. Blue (2)
None
None
Draw into 2 Lt. BLUE tubes. CRITICAL FROZEN PLASMA.