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Progesterone is used as part of hormone replacement therapy in people who have low progesterone levels, and for other reasons. For purposes of comparison with normal physiological circumstances, luteal phase levels of progesterone are 4 to 30 ng/mL, while follicular phase levels of progesterone are 0.02 to 0.9 ng/mL, menopausal levels are 0.03 to 0.3 ng/mL, and levels of progesterone in men ...
Mg megagram 10 −9 g ng: nanogram: 10 9 g Gg ... 500–500,000 kg A teaspoon (5 ml) ... Mass units conversion calculator JavaScript
mg/dL: Procalcitonin: 0.15 [162] ng/mL or μg/L: Isotypes of antibodies ... 500 [171] ng/mL: Higher in pregnant women [172] 0.5 [5] ... ng/mL: Narrow therapeutic ...
Values of 10 ng/mL to 100 ng/mL are associated with light smoking or moderate passive exposure, and levels above 300 ng/mL are seen in heavy smokers — more than 20 cigarettes a day. In urine, values between 11 ng/mL and 30 ng/mL may be associated with light smoking or passive exposure, and levels in active smokers typically reach 500 ng/mL or ...
500 L/day 0.7–2.8 nmol/L 20–81 ng/dL ... 0.1–0.9 ng/mL Luteal phase 25 mg/day 24 mg/day ... including secretion from glands and conversion of prohormones into ...
For example, the conversion factor between a mass fraction of 1 ppb and a mole fraction of 1 ppb is about 4.7 for the greenhouse gas CFC-11 in air (Molar mass of CFC-11 / Mean molar mass of air = 137.368 / 28.97 = 4.74). For volume fraction, the suffix "V" or "v" is sometimes appended to the parts-per notation (e.g. ppmV, ppbv, pptv).
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The factor–label method can convert only unit quantities for which the units are in a linear relationship intersecting at 0 (ratio scale in Stevens's typology). Most conversions fit this paradigm. An example for which it cannot be used is the conversion between the Celsius scale and the Kelvin scale (or the Fahrenheit scale). Between degrees ...