 1.0 ug/dL = 0.04826 umol/L      1.0  ug/dL = 20.72 ug/dL
        0 ug/dL = 0.    umol/L
        5 ug/dL = 0.241 umol/L
       10 ug/dL = 0.483 umol/L
       15 ug/dL = 0.724 umol/L
       20 ug/dL = 0.965 umol/L
       25 ug/dL = 1.206 umol/L
       30 ug/dL = 1.448 umol/L
       35 ug/dL = 1.689 umol/L
       40 ug/dL = 1.930 umol/L
       45 ug/dL = 2.172 umol/L
       50 ug/dL = 2.413 umol/L

ERYTHROCYTE PROTOPORPHYRIN

 1.0 ug/dL = 0.01778 umol/L   1.0 umol/L = 56.25 ug/dL
      28 ug/dL  = 0.498  umol/L
      35 ug/dL  = 0.622  umol/L
      70 ug/dL  = 1.245  umol/L




