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Hormone Panel: Tests, Hormones & Meaning

A hormone panel is a diagnostic test that measures the concentration of various hormones in blood, urine, or saliva to assess hormonal balance and detect disorders.

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A hormone panel is a diagnostic test that measures the concentration of various hormones in blood, urine, or saliva to assess hormonal balance and detect disorders.

What Is a Hormone Panel?

A hormone panel (also called a hormone profile or hormone status) is a laboratory diagnostic test that measures the levels of specific hormones in the body. Hormones are chemical messengers produced by glands such as the thyroid, adrenal glands, pancreas, and reproductive glands (ovaries and testes). They regulate a wide range of bodily functions. A hormone panel provides vital information about the hormonal balance and helps physicians identify and treat hormonal imbalances.

When Is a Hormone Panel Ordered?

A hormone panel may be ordered for a variety of symptoms and medical conditions. Common reasons include:

Difficulty conceiving or fertility problems
Irregular or absent menstrual periods
Symptoms of menopause or perimenopause
Unexplained weight gain or weight loss
Chronic fatigue and exhaustion
Suspected thyroid disorders
Acne, hair loss, or unwanted hair growth
Changes in libido or sexual function
Bone loss (osteoporosis)
Monitoring an ongoing hormone therapy

Which Hormones Are Measured?

Sex Hormones

Commonly tested sex hormones include:

Estrogen (Estradiol, E2): The primary female sex hormone, which regulates the menstrual cycle and is important for bone health.
Progesterone: Essential for the preparation of the uterine lining and maintaining a pregnancy.
Testosterone: The primary male sex hormone, also present in smaller amounts in women.
LH (Luteinizing Hormone) and FSH (Follicle-Stimulating Hormone): Pituitary hormones that regulate the function of the reproductive glands.
DHEA-S (Dehydroepiandrosterone Sulfate): A precursor hormone produced by the adrenal glands.

Thyroid Hormones

A thyroid panel typically includes:

TSH (Thyroid-Stimulating Hormone): The primary marker for thyroid function.
fT3 and fT4 (Free Triiodothyronine and Thyroxine): The active thyroid hormones that regulate metabolism.

Stress Hormones

Cortisol: The primary stress hormone of the adrenal cortex, influencing blood sugar, blood pressure, and immune function.
Adrenaline and Noradrenaline: Stress hormones of the adrenal medulla, typically measured in urine.

Other Important Hormones

Insulin and C-Peptide: Relevant when diabetes or insulin resistance is suspected.
Prolactin: A pituitary hormone that controls milk production.
IGF-1 (Insulin-like Growth Factor 1): A marker for growth hormone activity.
PTH (Parathyroid Hormone): Regulates calcium and phosphate balance.

How Is a Hormone Panel Performed?

Hormone levels are most commonly measured from a blood sample drawn at a clinic or laboratory. For some hormones such as cortisol or certain sex hormones, a saliva or urine sample may be used instead. Since many hormone levels fluctuate throughout the day or across the menstrual cycle, the timing of sample collection is critical. Blood draws are therefore often performed in the morning in a fasting state, and for women, on a specific day of the menstrual cycle.

Interpreting the Results

Interpreting a hormone panel requires medical expertise, as reference ranges vary depending on age, sex, cycle day, and time of day. An abnormal value does not necessarily indicate a disease and must always be evaluated in the overall clinical context. Deviations may point to hormonal disorders, glandular diseases, or other health problems and should prompt medical consultation.

Treatment Options for Hormonal Imbalances

If the hormone panel reveals abnormalities, various treatment options are available depending on the diagnosis:

Hormone Replacement Therapy (HRT): To compensate for hormone deficiencies, for example during menopause.
Thyroid Medications: For hypothyroidism or hyperthyroidism.
Lifestyle Changes: Dietary adjustments, stress reduction, and regular exercise can positively influence hormone levels.
Medical Treatment: Depending on the underlying condition, for example in cases of PCOS (Polycystic Ovary Syndrome) or diabetes.

References

Kasper, D. L. et al. (Eds.) - Harrison's Principles of Internal Medicine, 21st Edition, McGraw-Hill Education (2022)
Endocrine Society - Clinical Practice Guidelines. Available at: https://www.endocrine.org/clinical-practice-guidelines
Stanczyk, F. Z. et al. - Standardization of steroid hormone assays: why, how, and when? Cancer Epidemiology, Biomarkers and Prevention, 16(3), 440-448 (2007)

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