I have a hair test coming up and I took a morfine 10mg 1 or 2 a week for a couple weeks will it show it was a month ago

Very likely it will be detected, hope you had a prescription. The level of detection though is unknown and pass or fail is up to the conditions, and rules of the ones requiring the tests.

Morphine. Very likely you will pass if this was a one time event. These tests are designed to detect long term use over time.

Prescription or not, if you are required to abstain, you must abstain. Meaning, if you are supposed to stay away from certain substances you will still get in trouble even if you have a prescription.

Yes just a short time like 2 weeks a couple times a week maybe 3 weeks but not more than 2 a week

Its is pre employment testing

The question asked was "Do you have a prescription".