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Free T4 and Free T3 will reflex if the TSH is < 0.30 µIU/mL or > 5.33 µIU/mL.
Additional charges/CPT codes (84439 & 84481) will apply.
Lithium Heparin
Room Temperature: 72 hours
Refrigerated: 7 days
Frozen 1 month
The CPT codes included in this publication are in accordance with Current Procedural Terminology, a publication of the American Medical Association. CPT codes are provided here for the convenience of our clients; however, correct coding often varies from one carrier to another, and HealthLab may bill specific carriers using codes other than those shown. Clients who bill for services should verify the code(s) with the applicable payor to confirm that their use is appropriate in each case.
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