Mean levels (± SD) of plasma tHcy, serum folates, and cobalamin
Blood test .  | Patients .  | Control subjects .  | P .  | 
|---|---|---|---|
| Fasting tHcy, μM | 14.9 ± 27.5 | 10.0 ± 4.9 | .06 | 
| Postmethionine load tHcy increments, μM* | 21.1 ± 10.9 | 14.2 ± 6.6 | < .0001 | 
| Folate, nM | 5.6 ± 2.8 | 6.6 ± 3.3 | .01 | 
|  Cobalamin, pM  |  412.9 ± 238.9  |  408.5 ± 172.1  |  .88  | 
Blood test .  | Patients .  | Control subjects .  | P .  | 
|---|---|---|---|
| Fasting tHcy, μM | 14.9 ± 27.5 | 10.0 ± 4.9 | .06 | 
| Postmethionine load tHcy increments, μM* | 21.1 ± 10.9 | 14.2 ± 6.6 | < .0001 | 
| Folate, nM | 5.6 ± 2.8 | 6.6 ± 3.3 | .01 | 
|  Cobalamin, pM  |  412.9 ± 238.9  |  408.5 ± 172.1  |  .88  | 
Increments are defined as the difference between PML and fasting plasma tHcy levels.