Specimen:

Whole Blood

Collection Medium:

Alternate
Collection Media:

Call laboratory for additional acceptable specimen collection 
containers.

Minimum:

Preferred minimum:  3 mL whole blood in lavendar top tube (EDTA), mix 
well.
Absolute minimum:  1 mL whole blood

Testing
Schedule:

Availability: one batch per day. Cutoff time for same day service is 
0900. Results available 1200 daily.

Analytic Time:

24 hours (upon receipt in laboratory)

Reference Range:

Therapeutic range 5.0 - 20.0 ng/ml

Methodology:

Chemiluminescent Microparticle Immunoassay

Sample
Processing:

Submit whole blood in original container.
Label transport tube with two patient identifiers, date and time of 
collection.
Do Not Centrifuge.

Sample
Storage:

Refrigerate.

Transport
Instructions:

Place specimen into zip-lock type bag, seal bag.
Place requisition into outside pocket of bag.
Ship ambient or refrigerate.

Instructions:

Trough sample preferred.

CPT Code:

80197