Conforming to test-ordering guidelines* | Test ordered for a patient who presents with ≥ 1 symptoms or signs of primary hypothyroidism or with a previously unresolved investigation with results that might be directly associated with primary hypothyroidism (ie, anemia, hyperlipidemia, prolonged QT interval) |
Possibly conforming to test-ordering guidelines* | Test ordered for a patient who does not present with any symptoms or signs of primary hypothyroidism but who is at increased risk of primary hypothyroidism:
female patient aged > 50 y patient with a first-degree relative who has a history of autoimmune thyroid disease patient with a past medical history of an autoimmune disease patient with a history of radiation to the thyroid patient who is taking or who has taken lithium, amiodarone, or an iodine-containing product
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Not conforming to test-ordering guidelines* | Test ordered for the purpose of screening a patient who does not present with any symptoms or signs of primary hypothyroidism and who does not have previously unresolved investigation results that might be directly associated with primary hypothyroidism, and who is not at increased risk of primary hypothyroidism |