TABLE 2.
Representative proficiency testing results for iron-status assays
| Analyte | Most common assay method | Representative all-method imprecision (CV, %) |
| Hemoglobin | Spectrophotometry | 1.81 |
| Iron | Colorimetric dye binding | 5.72 |
| Transferrin | Nephelometric immunoassay | 4.82 |
| Ferritin | Sandwich immunoassay | 16.82 |
1
Estimated with an ANOVA with the use of the variability of the reported between-platform means and reported CV of the 5 samples in the Participant Summary Report for 2016-A of the FH1 survey from the College of American Pathologists.
2
Data are from the Participant Summary Report for 2016-A of the C survey from the College of American Pathologists. Data represent the mean of all-method means for the 5 samples in the survey.