Homocysteine HPLC 6.0 umol/L 4.6-15.5umol/L Cysteine HPLC 280 umol/L 167-257umol/L Cysteinylglycine HPLC 28.0 umol/L 56.7-74.7umol/L Any help me interpret these results and what I should do ? Does this mean my homocysteine is fine, my cysteine is high and my glyceine is low ? Or something else ? I take methylfolate for MTHFR677 homozygous and have lots of cracking joints. Thanks.