When it comes to your rights if you've been pulled over on suspicion of driving while intoxicated in the Granite State, the police inform you of the standard Miranda rights: you have the right to remain silent; any statement you make can be used against you in a court of law, etc. What they don't tell you is that while it does fall within your "rights" to refuse a blood test when you're back at the station, this decision alone could affect your life and driving ability.
It's called a "refusal." In the state of New Hampshire, regardless of why you were pulled over or whether or not you end up being convicted of any traffic or criminal charges, if you are arrested, asked to take a breath or blood test and you decline to, your license can automatically be revoked administratively.
If you have never been convicted of a DWI / DUI, your license can be suspended for 180 days. If you have a DWI / DUI on your record already or a previous refusal, you could lose your license for up to two years administratively.
This applies not just to incidents involving potential alcohol intoxication while driving, but also to offenses involving drugged driving. Thus, refusing a test for THC or, as per New Hampshire's latest DWI / DUI law, any prescription drug, you could face revocation of your license.
If you have been charged with drunk or drugged driving in the Granite State, you may want to consult an experienced New Hampshire DWI / DUI attorney, who can argue your case in court and help you move on with your life as soon as possible.