NANP Board Practice Exam

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Some of the most common lab test results brought in by clients are for TSH and thyroid hormones, which help determine thyroid function. If the TSH levels are elevated and thyroid hormone levels are lowered in the blood, it usually indicates a compromise in hormone production by the _________.

Adrenals

Hypothalamus

Parathyroid

Thyroid

TSH (thyroid-stimulating hormone) is released by the pituitary gland and stimulates the thyroid gland to produce thyroid hormones (T3 and T4). Therefore, if TSH levels are elevated and thyroid hormone levels are lowered, it indicates a problem with the thyroid gland itself. The other options - adrenals, hypothalamus, and parathyroid - are all involved in the endocrine system but are not directly responsible for producing thyroid hormones.

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