Comparison of Serum Folate Results from the Three Methods

There has been continued effort in recent years to improve the routine methods of serum folate estimation. The aim has been to make them simpler and more economical to perform while providing more reliable results. Methods have recently become available which claim a number of advantages over conventional bioassays. Here we compare two new methods, a radioisotope method and a fully automated microbiological assay, with a well-established microbiological tube assay.