Serum iron levels fluctuate according to (more than one answer may apply):
True or false: serum iron levels increase following an average meal.
What is a typical increase in serum iron following a meal:
True or false: when measuring serum iron, it is imperative to obtain a fasting blood sample.
True of false: one study showed that the positive and negative predictive value of serum iron is the same whether the sample is fasting or random.
True of false: some clinical practice guidelines point to the study alluded to in the previous question to justify NOT requiring a fasting sample.