The phrase "according to a modification" is correct and usable in written English.
It can be used when referencing changes or alterations made to a particular subject or document.
Example: "According to a modification in the policy, employees are now allowed to work remotely two days a week."
Alternatives: "based on a revision" or "in light of an amendment".
Pre-test likelihood of CAD was determined in every patient according to a modification of the Diamond-Forrester algorithm, as published by Morise et al. [28].
Nanostructured MnO2 was prepared by reducing Mn acac 2 in a polyol medium according to a modification of previously reported protocols [23, 30].
Stained sections were evaluated by four blinded graders and scored according to a modification of a canine knee synovial grading system (Cook et al. 2010) (Additional file 1: Table S1).
Using the DPPH free radical assay, according to a modification of our previously reported procedure [43], the radical scavenging activity of this new series of thiazolyl coumarins 10a-h was determined and expressed as IC50 values [41, 43], which is the concentration of tested compound required to scavenge 50% of the DPPH radical concentration (0.11 mM in this case on dilution).
Signs of AMD in those study populations were graded according to (a modification of) the international classification and grading system for AMD [43].
Glutathione was measured in atrial homogenates or whole blood according to a modification of Tietze's recycling assay [26] as previously used [18] and as thoroughly described by Rahman et al. [27].
Tyrosinase inhibitory activities of the CC-EO and its major constituents were determined by the tyrosinase-dependent L-3,4-dihydroxyphenylalanine (L-DOPA) oxidation assay according to a slight modification of the method of Kubo and Kinst-Hori (1998).
Filipin staining was performed according to a slight modification of the method of White et al [28].
U-500 regular insulin doses were started and changed according to a slight modification of a published algorithm (3).
Directional RNA-seq samples were prepared according to a slight modification of the protocol provided by Illumina.
Glucose and fructose were estimated according to a microplate modification of [ 17, 18] as described in [ 16].
