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Quinidine, Serum
Test Code7831
CPT Codes
80194
Preferred Specimen
"Serum or plasma
"
"
Minimum Volume
"0.3 mL
"
"
Instructions
"Refrigerate
Transfer separated serum or plasma to a plastic transport tube. Peak: quinidine sulfate: 11/2 hours after dose, quinidine gluconate: four hours after dose; trough: immediately prior to next dose; after change in dose: one to two days.
"
Transfer separated serum or plasma to a plastic transport tube. Peak: quinidine sulfate: 11/2 hours after dose, quinidine gluconate: four hours after dose; trough: immediately prior to next dose; after change in dose: one to two days.
"
Transport Container
"Red-top tube or green-top (heparin) tube. Do not use a gel-barrier tube. The use of gel-barrier tubes is not recommended due to slow absorption of the drug by the gel. Depending on the specimen volume and storage time, the decrease in drug level due to a
Specimen Stability
"Room temperature 14 days
Refrigerated 14 days
Frozen 14 days
Freeze/thaw cycles Stable x3
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Refrigerated 14 days
Frozen 14 days
Freeze/thaw cycles Stable x3
"
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
"Gel-barrier tube; severe hemolysis; lipemia; icteric specimen
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Methodology
"Immunoassay "
Reference Range
"Therapeutic: 2.0-5.0 µg/mL
Potentially toxic: >5.0 µg/mL
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Potentially toxic: >5.0 µg/mL
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