I hadn't thought to suspect this, and it has never come up in an annual check up. Is having the chills often a symptom of low iron? I am a meat and dairy eater, and also eat a lot of greens like spinach, kale and chard that have iron, so I wouldn't think it is likely.
I think its usually cold extremities and fatigue. It would show up in a blood panel so if you get those regularly then I'd guess you're good