Hydroxy 26.9 Low ng/mL 32.0 100.0 01 Recent studies consider the lower limit of threshold for optimal health. 32.0 ng/mL to be a Hollis BW. J Nutr. 2005 Feb;135(2):317-22. Homosyst(e)ine, Plasma 12.9 umol/L 0.0 - 15.0 01 TSH 2.040 uIU/ral, 0.450 - 4.500 01 Lp-PLA2 82 Low ng/mL 131