In 2017 LabCorp changed their normal reference range of serum testosterone values from 348-1197ng/dL to the a much lower 264-916ng/dL. The reason for the change was to encompass more men who are obese in the population and are known to have a lower serum testosterone level. This change is direct reflection that more men in society are overweight leading to a new normal lower serum testosterone reference range.
According to the Quest website the normal testosterone reference range for men is 250-1110ng/dL.
Therefore the diagnosis of Low-T that some insurance companies may rely upon differs depending on testing agency
So it depends on your Dr , how much you ate that morning as well as where you are getting tested - as to what exact rest dosage you may receive but it will never be close to 500mg unless you blow your balls off