Serum ferritin concentrations were measured in normal subjects over periods of 1 day, 1 week and 7 weeks. The variation of the results was compared with variation of control of control sera. In most of the subjects the variation in the results could be attributed to the variation in the method of measurement. No diurnal variation in serum ferritin concentration was observed.
No takes yet. Share an insight, caveat, or question.
Dawkins et al. (2008) studied this question.
Synapse has enriched 3 closely related papers on similar clinical questions. Consider them for comparative context: