These data support the transition of Lp(a) mass assays to molar concentration to improve diagnostic and clinical interpretation of Lp(a)-mediated risk.Īortic stenosis Assay Cardiovascular disease Lipoprotein(a).Ĭopyright © 2018 National Lipid Association. A single conversion factor between assays is not appropriate. Lp(a) molar/mass ratios are threshold, method, and isoform dependent. For the commercial turbidimetric assays and enzyme-linked immunosorbent assay, the ratios ranged from 5. The ratios for NLMDRL/UCSD, NLMDRL/Denka1, and NLMDRL/Denka2 increased by Lp(a) cutoffs, with ratios of 1.82, 1.52, and 1.87, respectively, for Lp(a) 125 nmol/L. Study with Quizlet and memorize flashcards terms like concentrations expressed in moles per litre allow for the comparison of, formula of concentration. The ratios between Lp(a) molar concentration and mass (eg, nmol/L/mg/dL) were calculated and related to apo(a) isoform size. Lp(a) mass levels were determined at the University of California, San Diego (UCSD) (1635 samples), by 5 commercially available assays: Denka 1 and Denka 2 (each 80 samples), 2 turbidimetric assays (25 samples, respectively), and an enzyme-linked immunosorbent assay (2605 samples).
Glucose has a molar mass of 180.16g/mol as discovered. The moles of glucose must now be determined. In Imperial or US customary measurement system, the density is equal to 49.2744 pound per cubic foot lb. density of ethanol is equal to 789.3 kg/m at 20C (68F or 293.15K) at standard atmospheric pressure.
#Molar concentration how to
Here is how to calculate the concentration. It is the number of moles of target substance (solute) dissolved in 1 liter of solution. Ethanol weighs 0.7893 gram per cubic centimeter or 789.3 kilogram per cubic meter, i.e. The molar concentration unit mol/ L (M) is a conventionally widely used as concentration method. In all samples, Lp(a) levels in molar concentration and apo(a) isoform size were determined at the Northwest Lipid Metabolism and Diabetes Research Laboratories (NLMDRL). Molality is defined as the number of moles of solute divided by the mass of the solvent expressed in kg. Equivalent molar concentration per liter. To quantify the relationship between Lp(a) molar concentration and Lp(a) mass in the context of various Lp(a) level thresholds and apo(a) isoform size. Values are often converted from one measurement to the other but the validity of this is unknown.
I want to find the volume of this substance in m 3.Lipoprotein(a) is reported as Lp(a) particle mass (mg/dL) or molar concentration of apolipoprotein(a) (nmol/L), which is considered the gold standard. What is Molarity Calculator It is a tool for calculating the number of moles of solute in a liter (moles/liter), you can give the numbers and select the units (volume, mass, and concentration) to calculate. Attributions and references Try it: The stoichiometry of a precipitation reaction Molarity is a useful concept for stoichiometric calculations involving reactions in solution, such precipitation and neutralization reactions. Molarity moles of Solute / liter of solution. Molar concentration can be used to convert between the mass or moles of solute and the volume of the solution. The concentration of a substance dissolved in water $i$ is known in (mol/m 3), so is the molar mass in (g/mol) and the density in (g/m 3). If the MW ( Molecular Weight ) of the protein is 40 KD, then the molar concentration for this protein product is 200 (g. molarity: a substance in solution, expressed as the number moles of solute per litre of solution Synonyms molar. It is one of the common units of measurement of the concentration of a solution.