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What is the difference between assay on as is basis and assay on anhydrous basis?
assay on as is basis includes the sample+water content+residual solvents+others. but assay on as is basis takes water content into account that means weight of the water present in the sample will be added in weighing the sample quantity of API required.
Is assay by mass balance equivalent to assay by as is basis?
No, assay by mass balance and assay by as is basis are not equivalent. Assay by mass balance calculates the amount of a component based on material balance equations, while assay by as is basis measures the amount of a component without accounting for any changes or losses that may occur during processing.
What is an assay?
An assay is a scientific test or analysis used to measure the presence, amount, or activity of a substance or compound in a sample. Assays are commonly used in biology, chemistry, and medicine to study a wide range of biological and chemical processes.
How do you assay thrombin potency?
You can assay thrombin potency by measuring its ability to convert fibrinogen to fibrin, typically using a chromogenic or clot-based assay. The results are compared to a standard curve to determine the potency of the thrombin sample.
What is the difference between assay and analysis?
Assay is the quantitative determination of the amount of a component in a sample. Purity is the determination of the impurities in the sample. It can be quantitative, semi-quantitative or qualitative. For example : if you dissolve 4 grams of compound A (with no impurities in it) in 6 grams of water, you get a solution of compound A with 100% purity and 40% assay. From the ICH Guideline Q2A (Validation of Analytical methods) : "- Testing for impurities can be either a quantitative test or a limit test for the impurity in a sample. Either test is intended to accurately reflect the purity characteristics of the sample. [...] - Assay procedures are intended to measure the analyte present in a given sample. In the context of this document, the assay represents a quantitative measurement of the major component(s) in the drug substance."
What is the difference between inter-assay and intra-assay variability in laboratory testing methods?
Inter-assay variability refers to differences in results between different tests, while intra-assay variability refers to variations within the same test.
What has the author Munther Mustafa Fathi written?
Munther Mustafa Fathi has written: 'The medical biochemistry of alkaline phosphatase' 'Studies on the assay of lutropin (luteinising hormone) using immunoradiometric assay systems'
What has the author John P Ransom written?
John P. Ransom has written: 'Practical competitive binding assay methods' -- subject(s): Analysis, Binding sites (Biochemistry), Competitive Binding, Hormones, Immunochemistry, Methods, Radioimmunoassay, Radioligand assay
What is the difference between assay on as is basis and assay on anhydrous basis?
assay on as is basis includes the sample+water content+residual solvents+others. but assay on as is basis takes water content into account that means weight of the water present in the sample will be added in weighing the sample quantity of API required.
What has the author K G Oldham written?
K. G. Oldham has written: 'Radiochemical methods of enzyme assay' -- subject(s): Analysis, Enzymes, Radioisotopes in biochemistry
Difference between assay as is basis and dried basis?
Assay on 'as is' basis refers to the composition of a substance including its water content, while assay on 'dried' basis refers to the composition of a substance after removing the water content. Comparing these two types of assays can help in understanding the true chemical composition of a substance excluding the influence of water content.
What is an assay pound?
An assay pound is a small standard weight used in assaying bullion, which varies between assayers, but is generally around half a gram.
Fiducial Limits in Microbiological Assay?
fiducial limits are similar to confidence limits. They contain the parameter of interest. But i m also not sure of the difference between the 2 limits. And the interpretation is same wether it's microbio or chem or bio.
What is the difference between potency and assay?
Potency is the purity of the compound ;this states % available of the main component without water and residual solvents Assay is defined as Potency plus water and residual solvents and other remaining fractions please note assay can also be expressed as as is basis or dry basis Assay and Potency are same if assay is exprtessed as as is basis please note Potency word is mainly used for Antibiotics and bilogicals courtsey ; CDER , USFDA ; Dr.Uttam Krishna
What is protein assay?
Protein assay is the determination of concentration or total level of protein in a solution.There are various protein assays employed like bradford assay and lowry assay
What are the differences between BCA and Bradford assays for protein quantification?
The main difference between the BCA and Bradford assays for protein quantification is the mechanism by which they measure protein concentration. The BCA assay relies on the reduction of Cu2 to Cu1 by proteins, while the Bradford assay uses the binding of Coomassie dye to proteins. Additionally, the BCA assay is more sensitive and has a wider linear range compared to the Bradford assay.
Is assay by mass balance equivalent to assay by as is basis?
No, assay by mass balance and assay by as is basis are not equivalent. Assay by mass balance calculates the amount of a component based on material balance equations, while assay by as is basis measures the amount of a component without accounting for any changes or losses that may occur during processing.
