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|Approval req'd?||Yes, contact Chemistry/Immunology Resident at 415-353-1438. Requires approval unless charged to a budget account.|
|Performed by||National Medical Service via Quest|
|Container type||Red top (Gold top NOT acceptable)|
|Amount to Collect||8 mL blood|
|Preferred volume||4 mL serum|
|Min. Volume||1 mL serum|
|UCSF Rejection Criteria||Collected in Gold top|
|Processing notes||Order Nichols Test # 34522N or 34522X.|
|Stability||Room temperature 2 weeks, refrigerated 1 month, frozen at -20C 18 months.|
|Turn around times||Set up 5x per week, turnaround 3-5 days|
|Additional information||Normal range not established for metabolite. Toxic range not established. Clinical effects correlate poorly with levels. Testing can only verify that the patient is taking and absorbing the drug.
Two to three fold greater plasma Verapamil concentrations are required after oral dosing, as compared to I.V.dosing, to elicit the same increase in a-v conduction time.
Reporting limit: 10 ng/mL. Less than 10 ng/mL, result reported as None Detected.
|Last Updated||10/28/2013 11:49:02 AM|
If you have additional questions regarding this test, please call: 415-353-1667