Reagentless Vis-NIR Spectroscopy Point-of-Care for Feline Total White Blood Cell Counts

• Type: Article in International Scientific Journal
• Date: 2024

Authors

Barroso, TG (Author) Other; Queirós, C (Author) Other; Monteiro Silva, F (Author) FCUP; Filipe Neves Santos (Author) FEUP; Gregório, AH (Author) Other; Martins, RC (Author) Other

Journal

Title: Biosensors-Basel

Vol. 246

Final page: 53

ISSN: 2079-6374

Publisher: MDPI

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 1 Citation

Other information

Authenticus ID: P-00Z-SZ5

DOI: 10.3390/bios14010053

Abstract (EN): Spectral point-of-care technology is reagentless with minimal sampling (<10 mu L) and can be performed in real-time. White blood cells are non-dominant in blood and in spectral information, suffering significant interferences from dominant constituents such as red blood cells, hemoglobin and billirubin. White blood cells of a bigger size can account for 0.5% to 22.5% of blood spectra information. Knowledge expansion was performed using data augmentation through the hybridization of 94 real-world blood samples into 300 synthetic data samples. Synthetic data samples are representative of real-world data, expanding the detailed spectral information through sample hybridization, allowing us to unscramble the spectral white blood cell information from spectra, with correlations of 0.7975 to 0.8397 and a mean absolute error of 32.25% to 34.13%; furthermore, we achieved a diagnostic efficiency between 83% and 100% inside the reference interval (5.5 to 19.5 x 10(9) cell/L), and 85.11% for cases with extreme high white blood cell counts. At the covariance mode level, white blood cells are quantified using orthogonal information on red blood cells, maximizing sensitivity and specificity towards white blood cells, and avoiding the use of non-specific natural correlations present in the dataset; thus, the specifity of white blood cells spectral information is increased. The presented research is a step towards high-specificity, reagentless, miniaturized spectral point-of-care hematology technology for Veterinary Medicine.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 16