| Each of ephedrine and methylephedrine is prohibited when its concentration in urine is greater than 10 micrograms per milliliter. |
| In oral fluid, drugs of abuse can be detected for 5-48 hours at a low nanogram per milliliter level. |
| Vitamin D was given in quantities sufficient to raise blood levels to 36 nanograms per milliliter, a level considered sufficient for good health. |
| One milliliter of sterile saline is flushed into the middle ear cavity and aspirated back. |
| One strain survived less than a day when exposed to a concentration of at least 2 micrograms per milliliter. |
| Pseudoephedrine is prohibited when its concentration in urine is greater than 150 micrograms per milliliter. |
