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Fluoride Number

Referred out for testing

Source Blood
Mnemonic FLUORNO
Specimen Requirements

2 x 4 mL red top tube, NOT SST

2 mL serum

CLS staff: Proceed with specimen collection and transport to DSC Accession. DSC Referrals will oversee the physician approval process.

Note to ordering physician: This test requires review and approval by CLS Medical & Scientific Staff.  Please contact CLS Referrals 403-770-3285 for further information on the approval process.

Specimen Handling PSC: 
Centrifuge, pour off serum, and transport on ice to DSC. Send specimen in a separate bag with a photocopy of the requisition.

RRL & extra-regional: 
Centrifuge, pour off and freeze serum prior to transport to DSC. Send specimen in a separate bag with a photocopy of the requisition.

DSC:
Freeze specimens upon receipt in lab; ensure frozen specimens do not thaw
Additional Information

Results of Pseudocholinesterase and Dibucaine number must support request.

CLS Referrals: Order test as "Cholinesterase Phenotyping".

Please collect specimen 24 hours post-surgery (if the patient has had recent surgery).

Testing Location Hamilton Reference Lab
Testing Frequency
Alternate Name(s) Cholinesterase - Phenotyping
Reference Interval