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  2. Fatigue - Wikipedia

    en.wikipedia.org/wiki/Fatigue

    Fatigue in a medical context is used to cover experiences of low energy that are not caused by normal life. [2] [3]A 2021 review proposed a definition for fatigue as a starting point for discussion: "A multi-dimensional phenomenon in which the biophysiological, cognitive, motivational and emotional state of the body is affected resulting in significant impairment of the individual's ability to ...

  3. Reference ranges for blood tests - Wikipedia

    en.wikipedia.org/wiki/Reference_ranges_for_blood...

    For most substances presented, the optimal levels are the ones normally found in the population as well. More specifically, optimal levels are generally close to a central tendency of the values found in the population. However, usual and optimal levels may differ substantially, most notably among vitamins and blood lipids, so these tables give ...

  4. Oxygen saturation (medicine) - Wikipedia

    en.wikipedia.org/wiki/Oxygen_saturation_(medicine)

    Normal arterial blood oxygen saturation levels in humans are 96–100 percent. [1] If the level is below 90 percent, it is considered low and called hypoxemia . [ 2 ] Arterial blood oxygen levels below 80 percent may compromise organ function, such as the brain and heart, and should be promptly addressed.

  5. Hypercapnia - Wikipedia

    en.wikipedia.org/wiki/Hypercapnia

    Hypercapnia (from the Greek hyper, "above" or "too much" and kapnos, "smoke"), also known as hypercarbia and CO 2 retention, is a condition of abnormally elevated carbon dioxide (CO 2) levels in the blood. Carbon dioxide is a gaseous product of the body's metabolism and is normally expelled through the lungs.

  6. Insulin - Wikipedia

    en.wikipedia.org/wiki/Insulin

    The blood insulin level can be measured in international units, such as μIU/mL or in molar concentration, such as pmol/L, where 1 μIU/mL equals 6.945 pmol/L. [64] A typical blood level between meals is 8–11 μIU/mL (57–79 pmol/L).

  7. Blood alcohol content - Wikipedia

    en.wikipedia.org/wiki/Blood_alcohol_content

    Blood alcohol content (BAC), also called blood alcohol concentration or blood alcohol level, is a measurement of alcohol intoxication used for legal or medical purposes. [ 1 ] BAC is expressed as mass of alcohol per volume of blood.

  8. Testosterone - Wikipedia

    en.wikipedia.org/wiki/Testosterone

    The secosteroid vitamin D in levels of 400–1000 IU/d (10–25 μg/d) raises testosterone levels. [169] Zinc deficiency lowers testosterone levels [170] but over-supplementation has no effect on serum testosterone. [171] There is limited evidence that low-fat diets may reduce total and free testosterone levels in men. [172]

  9. Estradiol - Wikipedia

    en.wikipedia.org/wiki/Estradiol

    In the normal menstrual cycle, estradiol levels measure typically <50 pg/mL at menstruation, rise with follicular development (peak: 200 pg/mL), drop briefly at ovulation, and rise again during the luteal phase for a second peak. At the end of the luteal phase, estradiol levels drop to their menstrual levels unless there is a pregnancy.