Clinical study of a new fecal occult blood test using a combination assay of hemoglobin and transferrin.
The applicability of a new immunological fecal occult blood test in which hemoglobin (Hb) and transferrin (Tf) are simultaneously assayed was evaluated. The mean absorbance and standard deviation (510/630 nm) obtained by this test was 0.840 +/- 0.805 in 51 fecal samples from patients with colon cancer, 0.248 +/- 0.305 in 95 samples from patients with colon polyps, and 0.104 +/- 0.053 in 110 samples from control patients; these values differed significantly (P less than 0.005). Hb and Tf concentrations were separately determined in the same fecal samples, and qualitative evaluation was performed with a cutoff value of 5.1 micrograms/g feces for Hb and 0.4 micrograms/g feces for Tf. Hb or Tf was positive in 41 of the 51 samples in the colon cancer group, 33 of the 95 in the colon polyp group, and 3 of the 110 in the control group. Qualitative analysis of the values obtained by the combination assay of Hb and Tf with a cutoff value of 0.200 revealed positive rates of 41/51 in the colon cancer group, 33/95 in the colon polyp group, and 4/110 in the control group. These results suggest the usefulness of a combination assay of Hb and Tf as a fecal occult blood test.
Miyoshi
H
H
Second Department of Internal Medicine, Osaka Medical College, Japan.
Uchida
K
K
Matsuse
R
R
Amatsu
T
T
Shimamoto
C
C
Hirata
I
I
Ohshiba
S
S
D000368:Aged; D003110:Colonic Neoplasms / Q000175:diagnosis; D003111:Colonic Polyps / Q000175:diagnosis; D005069:Evaluation Studies as Topic; D005260:Female; D006454:Hemoglobins / Q000032:analysis*; D006801:Humans; D007158:Immunologic Techniques; D008297:Male; D008875:Middle Aged; D009780:Occult Blood; D014168:Transferrin / Q000032:analysis*
D006454:Hemoglobins; D014168:Transferrin