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Brain and nerve healthDetected by MRI

Pituitary mass

A growth on the pituitary gland, which governs many of the body's hormones. MRI detection prompts hormonal evaluation and monitoring before the mass affects vision or hormone levels. MRI can raise suspicion of this finding, but a definitive diagnosis requires further specialist assessment — typically examining a tissue sample (taken by biopsy or during surgical removal), and sometimes additional imaging or blood tests.

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Related biomarkers we test

fT4 / TSH ratio

The ratio of free thyroxine (fT4) to thyroid-stimulating hormone (TSH) provides additional insight into thyroid function by evaluating how the pituitary gland responds to circulating thyroid hormone levels. It can reveal subtle thyroid dysfunction that individual fT4 or TSH values alone may not capture.

LH/FSH ratio

The LH/FSH ratio compares levels of luteinizing hormone to follicle-stimulating hormone, both produced by the pituitary gland. While FSH stimulates egg follicle development in the ovaries, LH triggers ovulation and supports progesterone production. The ratio between these hormones provides crucial insights into ovarian function and reproductive health that neither hormone alone can reveal.

Luteinizing hormone (Lutropin)

Luteinizing hormone (LH) is produced by the pituitary gland in the brain. In women, it triggers ovulation and supports estrogen and progesterone production, while in men it stimulates the testes to produce testosterone.

FSH, follitropin

FSH (Follicle Stimulating Hormone) is a pituitary hormone that stimulates egg development in ovaries and sperm production in testes. FSH levels vary throughout the menstrual cycle, surge during ovulation, and rise drastically after menopause when ovaries stop responding.

Free T4 (fT4)

Free T4 is produced by the thyroid gland and converted to active T3 in body tissues.

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