What's the difference between assay and estimation?

Assay


Definition:

  • (n.) Trial; attempt; essay.
  • (n.) Examination and determination; test; as, an assay of bread or wine.
  • (n.) Trial by danger or by affliction; adventure; risk; hardship; state of being tried.
  • (n.) Tested purity or value.
  • (n.) The act or process of ascertaining the proportion of a particular metal in an ore or alloy; especially, the determination of the proportion of gold or silver in bullion or coin.
  • (n.) The alloy or metal to be assayed.
  • (v.) To try; to attempt; to apply.
  • (v.) To affect.
  • (v.) To try tasting, as food or drink.
  • (v.) To subject, as an ore, alloy, or other metallic compound, to chemical or metallurgical examination, in order to determine the amount of a particular metal contained in it, or to ascertain its composition.
  • (v. i.) To attempt, try, or endeavor.

Example Sentences:

  • (1) Results by these three assays were also highly reproducible.
  • (2) However, when first trimester specimens were analyzed, the direct-product measurements were significantly larger than the corresponding 3H2O assay results.
  • (3) This difference was not due to ATPase activity in the assay.
  • (4) Immunocytochemistry was used to visualize cytoskeletal structures and to assay selective disruption of neurofilaments by acrylamide.
  • (5) After 2 weeks, the native and heterotopic pituitaries were assayed for SP, TSH, PRL, and LH.
  • (6) Proliferation assays using F3 showed that 15 (14 CD4+ and 1 CD8+) of the 18 isolated clones were specific for T. gondii.
  • (7) The transported pIgA was functional, as evidenced by its ability to bind to virus in an ELISA assay and to protect nonimmune mice against intranasal infection with H1N1 but not H3N2 influenza virus.
  • (8) Pokeweed mitogen-stimulated rat spleen cells were identified as a reliable source of rat burst-promoting activity (PBA), which permitted development of a reproducible assay for rat bone marrow erythroid burst-forming units (BFU-E).
  • (9) The enzyme, when assayed as either a phospholipase A2 or lysophospholipase, exhibited nonlinear kinetics beyond 1-2 min despite low substrate conversion.
  • (10) The increase in red blood cell mass was associated with an elevation in erythropoietic stimulatory activity in serum, pleural fluid, and tumor-cyst fluid as determined by the exhypoxic polycythemic mouse assay.
  • (11) The hprt T-cell cloning assay allows the detection of mutations occurring in vivo in the hypoxanthine-guanine phosphoribosyltransferase (hprt) gene of T-lymphocytes.
  • (12) Estimates of potential for gastrointestinal side effects using the rat enteropooling assay and in vivo monkey effects indicate that diarrhea will be substantially reduced with retention of uterine stimulating potency.
  • (13) Optimum rates of acetylene reduction in short-term assays occurred at 20% O2 (0.2 atm (1 atm = 101.325 kPa] in the gas phase.
  • (14) We have measured the antibody specificities to the two polysaccharides in sera from asymptomatic group C meningococcal carriers and vaccinated adults by a new enzyme-linked immunosorbent assay (ELISA) procedure using methylated human serum albumin for coating the group C polysaccharide onto microtiter plates.
  • (15) Plasma for beta-endorphin assay was preincubated with sepharose-bound anti-beta-lipotropin to remove beta-lipotropin that cross-reacted with the beta-endorphin RIA.
  • (16) For the detection of this antigen, a double antibody sandwich enzyme-linked immunosorbent assay (ELISA) was employed.
  • (17) In fact, the addition of conditioned medium obtained by 48 hr preincubation of isolated monocytes with 10% PF-382 supernatant (M-CM2) or the concomitant addition of supernatant from PF-382 cells (PF-382-CM) and from unstimulated monocytes (M-CM1) are capable of fully replacing the presence of monocytes in the BFU-E assay.
  • (18) Congenitally deficient plasmas were used as the substrate for the measurement of procoagulant activities in a one-stage clotting assay.
  • (19) Nevertheless, this LTR does not govern efficient transcription of adjacent genes in a transient expression assay.
  • (20) A one point dilution enzyme-linked immunosorbent assay (ELISA) procedure suitable for determining immunoglobulin G (IgG) antibody levels to Toxoplasma gondii (T. gondii) in community seroepidemiological surveys is described.

Estimation


Definition:

  • (v. t.) The act of estimating.
  • (v. t.) An opinion or judgment of the worth, extent, or quantity of anything, formed without using precise data; valuation; as, estimations of distance, magnitude, amount, or moral qualities.
  • (v. t.) Favorable opinion; esteem; regard; honor.
  • (v. t.) Supposition; conjecture.

Example Sentences:

  • (1) Changes in cardiac adenosine triphosphate (ATP), phosphocreatine (PCr) and inorganic phosphate (Pi) were followed and intracellular pH (pHi) was estimated from the chemical shift of Pi.
  • (2) Estimations of the degree of incorporation of 14C from the radioactive labeled carbohydrate into the glycerol and fatty acid moieties were carried out.
  • (3) We conclude that the SHBG concentration strongly affects this estimation.
  • (4) In this review, we demonstrate that serum creatinine does not provide an adequate estimate of glomerular filtration rate (GFR), and contrary to recent teachings, that the slope of the reciprocal of serum creatinine vs time does not permit an accurate assessment of the rate of progression of renal disease.
  • (5) The models are applied to estimate the demand for tobacco products in Finland.
  • (6) Estimates of the risk probability for each dose level and sacrifice time are found utilizing the sample likelihood as the posterior density.
  • (7) Estimates of potential for gastrointestinal side effects using the rat enteropooling assay and in vivo monkey effects indicate that diarrhea will be substantially reduced with retention of uterine stimulating potency.
  • (8) The ED50 and ED95 of mivacurium in each group were estimated from linear regression plots of log dose vs probit of maximum percentage depression of neuromuscular function.
  • (9) We are pursuing legal action because there are still so many unanswered questions about the viability of Shenhua’s proposed koala plan and it seems at this point the plan does not guarantee the survival of the estimated 262 koalas currently living where Shenhua wants to put its mine,” said Ranclaud.
  • (10) To estimate the age of onset of these differences, and to assess their relationship to abdominal and gluteal adipocyte size, we measured adiposity, adipocyte size, and glucose and insulin concentrations during a glucose tolerance test in lean (less than 20% body fat), prepubertal children from each race.
  • (11) The level of significance of the statistical estimate of the change in the number of phonoreactive units (its increase due to deprivation) amounts to 92%.
  • (12) Variables included an ego-delay measure obtained from temporal estimations, perceptions of temporal dominance and relatedness obtained from Cottle's Circles Test, Ss' ages, and a measure of long-term posthospital adjustment.
  • (13) The molecular weight of antigen RFB2 was estimated to be approximately 85,000 daltons based on the results of gel filtration on Sepharose CL-6B.
  • (14) The radius is estimated to be around 1.7 nm, which shows a moderate degree of hydration.
  • (15) Another important factor, however, seems to be that patients, their families, doctors and employers estimate capacity of performance on account of the specific illness, thus calling for intensified efforts toward rehabilitation.
  • (16) The estimated DNA compaction ratio (approximately 3-fold) is consistent with a significant degree of nucleosome unfolding in the hyperstimulated BR genes.
  • (17) The Pan American Health Organization, the Americas arm of the World Health Organization, estimated the deaths from Tuesday's magnitude 7 quake at between 50,000 and 100,000, but said that was a "huge guess".
  • (18) The risk of recurrence and progression in 170 patients presenting with pTa urothelial tumours of the bladder has been estimated so that follow-up can be rationalised.
  • (19) Serum gamma glutamyl transferase (gammaGT) and alkaline phosphatase (ALP) activities have been estimated in 49 epileptic patients taking anticonvulsant drugs.
  • (20) The effect of these drugs was estimated from the cell growth curve and DNA histogram determined by flow cytometry.