Phenotype Reference Range (µM) Reference Range (mg/dL)
Pi M 23.7 - 41.7 123 - 217
Pi MS 21.1 - 33.1 110 - 172
Pi MZ 14.0 - 31.6 73 - 164
Pi SS 14.6 - 31.0 76 - 161
Pi SZ 7.5 - 19.9 39 - 103
Pi Z 1.3 - 7.7 7 - 40

For conversion of µM to mg/dl multiply µM concentration by 5.2