Since starting to supplement nutrients 8 years, I also tested them whenever I could. However, thereby I mentioned that the 'normal' lab references for nutrients get reduced every few years. That's because they usually represent the middle 95% of everyone tested from a lab. So it seems there is a ceaselessly downward movement what's considered as a 'normal' nutrient status.
This honestly scares me. Because ultimately it implies not only that the nutrient status in the average population is steadily declining, but especially in the diseased part of the population, which naturally would have more incentive for getting it tested. All the while being assured of having 'normal' nutritional status.
That's why I'm asking anyone in the known: What have been the 'normal' ranges for these nutritional (but also most common functional) blood tests, short after they been invented?
Sure there must be somebody here with ancient textbooks laying around..