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For differential diagnosis of primary, secondary, and tertiary hypothyroidism. Also useful in screening for hyperthyroidism. This assay allows adjustment of exogenous thyroxine dosage in hypothyroid patients and in patients on suppressive thyroxine therapy for thyroid neoplasia.
1 biomarker
This test measures the total level of T3 hormone in the blood, which is crucial for diagnosing and monitoring the treatment of hyperthyroidism. It also plays a key role in identifying T3 toxicosis, a condition where there's too much thyroid hormone.
1 biomarker
This test measures the availability of thyroid hormone binding sites, providing insights into thyroid health. It's important to interpret this test alongside thyroxine levels for a comprehensive understanding of thyroid function.
1 biomarker
This test is typically ordered if patients exhibit symptoms of hyperthyroidism or if other thyroid test results, like TSH or FT4, are unusual.
1 biomarker
This test is crucial for diagnosing thyroid conditions such as hypothyroidism (underactive thyroid) and hyperthyroidism (overactive thyroid). By measuring the total level of thyroxine (T4) in the blood, it helps in understanding thyroid function and identifying potential issues.
2 biomarkers
This test measures the amount of unbound thyroxine (T4) in the blood It's a key test for diagnosing thyroid conditions like hyperthyroidism (where FT4 levels are high) and hypothyroidism (where FT4 levels are low).
1 biomarker
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Stephanie Strudley, CNS, is a functional medicine nutritionist and the founder of Upstream Wellness. She helps driven, health-conscious adults who've done "everything right" and still don't feel like themselves — connecting the dots between symptoms, labs, and lifestyle to uncover what's actually going on. Her approach is shaped by an unconventional path: a background in ecology and systems biology, and her own experience navigating serious, unresolved health challenges before finding root-cause care herself. She doesn't believe in one-size-fits-all protocols or quick fixes — she believes health is more like solving a puzzle than following a formula, and her role is to help clients ask better questions, interpret their own data, and build a plan that fits their unique biology and life.
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