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|Methodology:||Inductively Coupled Plasma/Mass Spectrometry (ICP/MS)|
|Performed:||Varies, twice each week|
|Released:||24 hours after setup at PeaceHealth Laboratories’ reference lab.|
|Specimen Collection Details|
|Collection:||One 6 mL royal blue top tube (EDTA). Also acceptable: One 6 mL royal blue top tube Trace Element – no additive.|
|Handling:||Centrifuge and separate plasma or serum into a metal-free screw cap vial. Do not insert pipette into the plasma or serum, and do not ream the specimen with a wooden stick to remove any clots.|
|Stability:||24 hours ambient or 10 days refrigerated. Unstable frozen.|
|Standard Volume:||1 mL plasma or serum.|
|Minimum Volume:||0.5 mL plasma or serum.|
|Rejection Criteria:||Specimen frozen; other than EDTA serum or plasma in a royal blue top tube.|
Values between 80 µg/L and 250 µg/L have been reported to indicate hyperthyroidism.
Values >250 µg/L may indicate iodine overload.
|Administration of iodine-based contrast media and drugs, such as amiodarone, will yield elevated results.
Disinfectants such as betadine which contain iodine should not be used during venipuncture.
If gadolinium-containing contrast media has been administered, a specimen should not be collected for 48 hours.