US 12,437,981 B2
Adjustments of mass spectrometry signals
Mohit Jain, San Diego, CA (US); Saumya Tiwari, San Diego, CA (US); and Jeramie Watrous, San Diego, CA (US)
Assigned to Sapient Bioanalytics, LLC, San Diego, CA (US)
Filed by Sapient Bioanalytics, LLC, San Diego, CA (US)
Filed on May 20, 2022, as Appl. No. 17/750,258.
Prior Publication US 2023/0377864 A1, Nov. 23, 2023
Int. Cl. H01J 49/00 (2006.01); G01N 30/02 (2006.01); G01N 30/72 (2006.01); G01N 30/86 (2006.01); G06N 20/00 (2019.01)
CPC H01J 49/0036 (2013.01) [G01N 30/7233 (2013.01); G01N 30/8624 (2013.01); G06N 20/00 (2019.01); G01N 2030/027 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A computer-implemented method performed by a computing system, comprising:
obtaining raw mass spectrometry data from samples, wherein the samples belong to different batches;
determining true signals from the raw mass spectrometry data;
identifying one or more constituents corresponding to each of the true signals;
for any constituent true signals, wherein the constituent true signals correspond to a same constituent in different batches:
determining intensities corresponding to the constituent true signals;
in response to determining that the intensities across different batches exhibit a non-randomized distribution of intensities according to a statistically significant criteria,
normalizing the intensities across the different batches, wherein the normalizing of the intensities comprises:
for each batch of the different batches, at each particular sample of the each batch, multiplying a sample intensity of the each particular sample by a global median intensity across the different batches, divided by a batch median intensity of the each batch, wherein normalizing results in uniform batch median intensities across the different batches; and
based on the normalized intensities, determining concentrations of the one or more constituents corresponding to the constituent true signals.