Prealbumin
Prealbumin is the fraction migrating faster than albumin toward the anode. It is the same as transthyretin (TTR). Mutations in transthyretin is associated with hereditary amyloidosis. True prealbumin is generally below the limit of detection in serum protein electrophoresis, but may be detected in electrophoresis of concentrated CSF.
Read more about this topic: Serum Protein Electrophoresis