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2 x 4 mL lavender top EDTA tubes
The patient must fast and abstain from smoking tobacco for at least 4 hours before the specimen is drawn. The patient may drink only water during the fasting period.
|Specimen Handling||PSC & RRL: |
Centrifuge, pour off, and transport plasma on ice to DSC.
Centrifuge, pour off and freeze plasma prior to transport to DSC.
Freeze specimens upon receipt in lab; ensure frozen specimens do not thaw.
ºMetanephrines - Urine is the preferred screening test.
Interpretation of results while on one of these agents should be interpreted with caution and put into clinical context.
Testing includes: Metanephrine and Normetanephrine
|Testing Location||Analytical Toxicology
|Testing Frequency||Every week|
|Alternate Name(s)||Metanephrines, Fractionated|
|Reference Interval||Plasma Normetanphrine <0.90 nmol/L|
Plasma Metanephrine <0.50 nmol/L