Fig. 1.

${\mathrm{THb}}^{\text{MSOT}}$ biomarker measured in tissue-mimicking phantoms corresponds to biochemical HB, HCT, and RBC levels in mouse and rat. ${\mathrm{THb}}^{\text{MSOT}}$ extracted from PAI data obtained from tissue-mimicking phantoms containing blood from female mice [$n=15$, purple circles, (a)–(c)] and rats [$n=14$, pink squares, (d)–(f)] correlated significantly with biochemical (a), (d) HB; (b), (e) HCT; and (c), (f) RBC count concentration in both species. * $p<0.05$, ** $p<0.01$ by Pearson correlation.