This form should ONLY be used if you wish to inquire whether or not a prospective driver (CDL Holder) has had a positive alcohol or controlled substance test result reported.
Reporting a test: this form is not required for reporting a positive alcohol or controlled substance test.
Signature: this form must be completed in full and include the driver's original signature; electronic signatures will not be accepted.
Electronic mail: if you wish to request and receive this information by electronic mail, submit a completed and notarized Electronic Mail Verification Form (MCS-32).
Self request: check here if CDL Holder is requesting results on self.
| Question | Answer |
|---|---|
| Form Name | Form MCS-21 |
| Form Length | 1 page |
| Fillable? | Yes |
| Fillable fields | 12 |
| Avg. time to fill out | 2 min |
| Edition | 10/17 |
| Where to send | Texas Department of Public Safety Motor Carrier Bureau, MSC #0521, 6200 Guadalupe, Building P, Austin, Texas 78752-4019 |
| Who signs | The driver |
| Other names | MCS-21, MCS 21, MCS21, Form MCS-21, Release of CDL Holder's Reported Positive Alcohol or Controlled Substance Test Results |
| Official source | Form MCS-21 (Rev 10/17), Texas Department of Public Safety |
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