Assessment of four enzyme immunoassay kits for serum beta-hCG screening.

This pilot study evaluates four qualitative serum beta-human chorionic gonadotropin (beta-hCG) enzyme immunoassay kits for both routine pregnancy testing and screening for ectopic pregnancy. We found that the Tandem-E HCG assay had the lowest limit of detection, and longest turnaround time. Tandem ICON HCG assay had the shortest turnaround time. The Vis-Con II was the most economical batch test. The Quest assay kit was both fast and simple and had the lowest cost for stat testing.