Currently, in Nigeria, the Medical Laboratory Science Council of Nigeria (MLSCN) is responsible for regulating and licensing medical laboratory scientists, including microbiologists who graduated from MLS.

The MLSCN was established by the Medical Laboratory Science Council of Nigeria Act 11, Laws of the Federation of Nigeria, 2003.

To become a licensed microbiologist in Nigeria, you must have a degree or diploma from a recognized institution in Medical Laboratory Science. https://manandmicrobes.com/license-for-microbiologist-in-nigeria/

Nitrous oxide, also known as laughing gas, can be detected through a urine test, but it is not typically included in standard drug tests used to detect common illicit drugs. 

Nitrous oxide can be detected in urine for up to 24 hours after use, but this depends on the amount used, frequency of use, and individual factors such as metabolism.

It's important to note that the use of nitrous oxide is legal for certain medical purposes, such as anesthesia or pain relief, and is not typically considered a "drug of abuse" in these contexts. 

However, the use of nitrous oxide for recreational purposes, such as getting high or a "head rush," is considered abuse and illegal in many jurisdictions.
https://manandmicrobes.com/does-nitrous-oxide-show-up-in-urine-tests/