Yes if the test is used to ascertain if an antibiotic is at therapeutic levels in the system (usually via bloodwork). It wouldn't be used on normal drug tests for such things as employment, the legal system, etc.
Yes, urine can be stored in the fridge before lab testing. In fact, urine is always supposed to be stored in cooler temperatures for testing. This prevents the growth of bacteria in the urine.
Zithromax is a macrolide
No just urine testing.
They do Hair testing.
for drug testing?
Law enforcement agencies and court systems are major users of EtG urine testing.
No, Zithromax is a macrolide.
lipids
Routine and Microscopy,
Urine, when stored in an air tight container, free from contamination and help under constant specified temperature can be used for drug testing over a lengthy time period. Frozen urine can be kept indefinitely for testing.
By testing urine samples for glucose, proteins and others
Hair and urine testing