ESTIMATION OF SERUM L. CASEI ACTIVITY.
Measurement of the serum Lactobacillus casei (;folic-acid') activity is widely used as an index of folic-acid deficiency. Present methods of assay result in recovery of about half the active material in normal serum. A modified method of assay is described which gives higher L. casei values and a clearer distinction between the sera of normal subjects and of patients with folic-acid deficiency.
D000740:Anemia; D000748:Anemia, Macrocytic; D001205:Ascorbic Acid; D001681:Biological Assay; D001769:Blood; D005492:Folic Acid; D005494:Folic Acid Deficiency; D006801:Humans; D007778:Lactobacillus; D014806:Vitamin B 12 Deficiency
D005492:Folic Acid; D001205:Ascorbic Acid
ANEMIA, MACROCYTIC; ASCORBIC ACID; BIOLOGICAL ASSAY; BLOOD; FOLIC ACID; LACTOBACILLUS; VITAMIN B 12 DEFICIENCY