University of Madison also has many good videos on their site regarding calcium & PTH. Their information states if calcium is even higher at 10.3 ( let’s say) the PTH should be more like 15..or very low.
My primary told me today calcium fluctuates widely & who knows maybe you drank a glass of milk before your lab draw.
What I have read & researched is that it’s a very precise mechanism in the body…it shouldn’t “fluctuate” & 10’s are too high for an adult.
???

@bonaroo, you ask "What does Mayo do?" is a great question. Answers to that question are based on you and your condition, test results etc. I see that you've requested an appointment. When you discuss with the scheduler, you will have the opportunity to ask the questions you are asking here, such as the approach, treatment vs. watch and wait, and if your local care aligns with their recommendations. Mayo's physician expert review of your request and medical records will determine whether Mayo Clinic could offer any further or different treatment for you. It is our goal to provide the best care each patient needs, however we do not want to have you incur additional costs for evaluation or travel if we do not feel we can offer care that is different from what you’re already receiving.

Here's more information about calcium testing and hypercalcemia from Mayo Clinic Laboratories. https://www.mayocliniclabs.com/test-catalog/Overview/601514#Clinical-and-Interpretive
"The level at which hypercalcemic symptoms occur varies from patient to patient. Symptoms are common when serum calcium levels are above 11.5 mg/dL, although patients may be asymptomatic at this level. Levels above 12.0 mg/dL are considered a critical value. Severe hypercalcemia (>15.0 mg/dL) is a medical emergency."