Does Schlumberger in Nigeria do a hair follicle test, urine, blood or saliva for their drug test?

I applied for a job at slb, I saw online they have a pre employment drug test but different countries use different methods for their drug test and I can't find anything online about which method Schlumberger port Harcourt use.

I used to take drugs in the past but I have been clean for almost a most which I'm happy about. If it's a hair follicle test it can detect my past drug use up to 90 days and if that's the case I'm doomed and it'll be a waste of time to even bother taking the interview. If it's a urine test then I might be safe.

Please if you have any idea on their drug screening please help me out. Should I go on with the interview?