A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Copper, RBC
Test Code3481
CPT Codes
82525<br><strong>This test is not available for New York patient testing.</strong>
Preferred Specimen
0.5 mL red blood cells collected in an EDTA trace metal-free (royal blue-top) tube
Minimum Volume
0.3 mL
Other Acceptable Specimens
Red blood cells collected in: EDTA (lavender-top), sodium heparin trace metal-free (royal blue-top), sodium heparin (green-top), sodium heparin lead-free (tan-top), or lithium heparin (green-top) tube
Instructions
Carefully clean skin prior to venipuncture. Avoid worksite collection.
Red blood cells trace metal: Use the EDTA trace metal-free (royal blue-top) tube (Becton-Dickinson catalog #367736) for RBC trace metal testing.
Packed cells: Centrifuge to separate plasma from RBCs and discard plasma. Transfer RBCs to a plastic transfer tube from a Quest Diagnostics (trace element and metal-free) collection kit or transfer to a transport tube.
Red blood cells trace metal: Use the EDTA trace metal-free (royal blue-top) tube (Becton-Dickinson catalog #367736) for RBC trace metal testing.
Packed cells: Centrifuge to separate plasma from RBCs and discard plasma. Transfer RBCs to a plastic transfer tube from a Quest Diagnostics (trace element and metal-free) collection kit or transfer to a transport tube.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 10 days
Refrigerated: 10 days
Frozen: Unacceptable
Refrigerated: 10 days
Frozen: Unacceptable
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Clotted
Methodology
Inductively Coupled Plasma/Mass Spectrometry (ICP/MS)
FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Set up: Sun, Wed, Fri; Report available: 1-4 days
Clinical Significance
Copper is an essential element that is a cofactor of many enzymes. Copper metabolism is distributed in Wilson's disease, Menkes disease, primary biliary cirrhosis, and Indian childhood cirrhosis. Copper concentrations increase in acute phase reactions. Copper concentrations are decreased with nephrosis, malabsorption, and malnutrition. Copper concentrations are also useful to monitor patients, especially preterm newborns, on nutritional supplementation. Results of copper are often interpreted together with ceruloplasmin.