Hormone levels in the blood: when to pay attention to “invisible regulators”
What you feel is a consequence.
Mood swings, sleep disturbances, skin or weight problems can all be signs of a lack or excess of certain hormones. Hormones are not physically felt, but they determine everything from the cell cycle to how we respond to stress. And before symptoms become critical, they are already present in the blood. A hormone test is not about illness, but about diagnostics of the functional state of the body.
Three contexts where hormones play a key role
1. Daily well-being
Do you feel tired in the morning, often feel cold, or react sharply to stress? It's not just "overwork." It could be low thyroid hormone levels (hypothyroidism) or excess cortisol.
2. Fertility and cycle
Irregular menstruation, lack of ovulation, problems with conception are a signal to check FSH, LH, estradiol, progesterone, prolactin and TSH. In men, testosterone and FSH.
3. Metabolism and weight
Sudden weight loss or, conversely, stable weight gain without changing your diet may be associated with insulin resistance, problems with the adrenal glands, or thyroid gland.
What is the complexity of hormonal diagnostics?
Hormones have circadian oscillations — their level changes throughout the day.
They are interrelated: a decrease in one indicator can lead to a compensatory increase in another.
The results are affected by stress, food, physical activity, cycle phase, medications.
One analysis does not give the full picture - it is important dynamics and a combination of several indicators.
A hormonal profile is not a template
There is no «universal» list of hormones for everyone. It is formed by the doctor depending on:
symptoms,
age and gender,
concomitant diseases,
patient goals (e.g., pregnancy planning or weight control).
Example of practical application
Complaint: chronic anxiety, insomnia, sweating
Appointment: cortisol (morning), TSH, T4 free, prolactin
Result: increased cortisol and TSH, decreased T4 → confirmed hypothyroidism and stress
Tactics: replacement therapy + regimen correction
How is the fence going?
It seems venous blood, usually in the morning from 8:00 to 10:00.
Need to be on an empty stomach, at least 8 hours before the analysis - only water.
Importantly don't smoke, don't drink coffee, don't exercise in the morning.
For women — to agree on the day of the cycle (some hormones are released on specific days).
Which hormones should be monitored regularly?
Hormonal analysis is an investment in predictability
This is not a «just in case» analysis. This is— functional impairment detection tool before they develop into a diagnosis. Hormones are not just about sexual health. They are about mental clarity, stress resistance, the ability to adapt to stress, and maintaining quality of life. If the body is “speaking,” a hormone analysis will help you understand its language.
Director of Medi Lab Plus LLC, a doctor of the highest category. Has over 45 years of practical experience in medicine and laboratory diagnostics. Founder and head of the laboratory since 2007. More details…