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  2. Dilution ratio - Wikipedia

    en.wikipedia.org/wiki/Dilution_ratio

    The "dilution factor" is an expression which describes the ratio of the aliquot volume to the final volume. Dilution factor is a notation often used in commercial assays.

  3. Pharmaceutical formulation - Wikipedia

    en.wikipedia.org/wiki/Pharmaceutical_formulation

    Before administration, a lyophilized drug is reconstituted as a liquid before being administered. This is done by combining a liquid diluent with the freeze-dried powder, mixing, then injecting. Reconstitution usually requires a reconstitution and delivery system to ensure that the drug is correctly mixed and administered.

  4. Clark's rule - Wikipedia

    en.wikipedia.org/wiki/Clark's_rule

    Clark's rule is a medical term referring to a mathematical formula used to calculate the proper dosage of medicine for children aged 2–17 based on the weight of the patient and the appropriate adult dose. [1] The formula was named after Cecil Belfield Clarke (1894–1970), a Barbadian physician who practiced throughout the UK, the West Indies ...

  5. Homeopathic dilutions - Wikipedia

    en.wikipedia.org/wiki/Homeopathic_dilutions

    In the last ten years of his life, Hahnemann also developed a quintamillesimal (Q) or LM scale diluting the drug 1 part in 50,000 parts of diluent. [19] A given dilution on the Q scale is roughly 2.35 times its designation on the C scale. For example, a preparation described as "20Q" has about the same concentration as one described with "47C ...

  6. Trough level - Wikipedia

    en.wikipedia.org/wiki/Trough_level

    It is pharmacokinetically normal that over time, the drug molecules are being metabolized or cleared by the body, so the concentration of drug that remains available is dropping. In a medicine that is administered periodically, the trough level should be measured just before the administration of the next dose in order to avoid overdosing. [ 3 ]

  7. List of abbreviations used in medical prescriptions - Wikipedia

    en.wikipedia.org/wiki/List_of_abbreviations_used...

    take (often effectively a noun meaning "prescription"—medical prescription or prescription drug) rep. repetatur: let it be repeated s. signa: write (write on the label) s.a. secundum artem: according to the art (accepted practice or best practice) SC subcutaneous "SC" can be mistaken for "SL," meaning sublingual. See also SQ: sem. semen seed

  8. Apothecaries' system - Wikipedia

    en.wikipedia.org/wiki/Apothecaries'_system

    English-speaking countries also used a system of units of fluid measure, or in modern terminology volume units, based on the apothecaries' system. Originally, the terms and symbols used to describe the volume measurements of liquids were the same as or similar to those used to describe weight measurements of solids [33] (for example, the pound by weight and the fluid pint were both referred to ...

  9. Water for injection - Wikipedia

    en.wikipedia.org/wiki/Water_for_injection

    U.S. Food and Drug Administration. 27 August 2014. "Guideline on the quality of water for pharmaceutical use (draft)" (PDF). 4 Committee for Medicinal Products for Human Use (CHMP). European Medicines Agency (EMA). 13 November 2018. "Water for injection". Drug Information Portal. U.S. National Library of Medicine. 16 December 2022.