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What Does Ng/ml Unit Mean In A Test Report?

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Posted on Mon, 18 Jul 2022
Question: My blood test showed 235ng/mL of amphetamine. It showed 4.3 ug/mL of meprobamate. It showed 0.5 ug/mL Carisoprodol. Lastly is showed 63ng/mL of alprazolam. I am prescribed 75 mg of adderall a day. I am also prescribed 6 350 mg of soma a day. I am prescribed 4.5 mg of xanax a day. I dont know what meprobamate is? But I am also prescribed 16 mg of subutex a day. I have been taking adderall well about 15 years. I have taken xanax since 2000 and have come down 1 mg so far. I am titrating down bc I dont want go keep takinh this and have to take more bc it bo longer works. I have a great psychiatrist who has helped me titrate down and I am anxiously ebgaged in yoga, meditation, and therapy. I have taken the soma and subutex for about 6 years. I only take my subutex for pain and break the 8mg in halves. Please tell me what all the numbers convert to ie, 235ng/mL = 60mg...etc.  Thank You Doctor.
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Answered by Dr. Vaishalee Punj (2 hours later)
Brief Answer:
The numbers are concentration in blood

Detailed Answer:

Hi,

ng/ml is the unit used to know concentration of drug in blood. mg is used to indicate the dose taken.
In your case:

235 ng/ml of amphetamine is due to intake of 75 mg of adderall. If we calculate with a formula, then it comes to be around 100 mg of adderall taken to get a volume of 432 L. It means that the medicine is being taken in regular dose.

Meprobamate is a metabolite of carisoprodol. Their calculation is complicated but it does suggest that low values in blood. It suggests that maybe you had stopped taking carisoprodol (soma) at least since few days when blood test was done. let me know if that's the case or maybe because of tough calculation (due to multiple metabolites), its corresponding dose is not possible.

Subutrex is buprenorphine and is a pain killer and is not showing in blood test.

You seem to be taking more than 3 mg of xanax from the concentration in blood.

Hope this helps. Let me know if I can assist you further.
Dr. Vaishalee
Note: For more detailed guidance, please consult an Internal Medicine Specialist, with your latest reports. Click here..

Above answer was peer-reviewed by : Dr. Vaishalee Punj
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Answered by
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Dr. Vaishalee Punj

General & Family Physician

Practicing since :2003

Answered : 3262 Questions

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What Does Ng/ml Unit Mean In A Test Report?

Brief Answer: The numbers are concentration in blood Detailed Answer: Hi, ng/ml is the unit used to know concentration of drug in blood. mg is used to indicate the dose taken. In your case: 235 ng/ml of amphetamine is due to intake of 75 mg of adderall. If we calculate with a formula, then it comes to be around 100 mg of adderall taken to get a volume of 432 L. It means that the medicine is being taken in regular dose. Meprobamate is a metabolite of carisoprodol. Their calculation is complicated but it does suggest that low values in blood. It suggests that maybe you had stopped taking carisoprodol (soma) at least since few days when blood test was done. let me know if that's the case or maybe because of tough calculation (due to multiple metabolites), its corresponding dose is not possible. Subutrex is buprenorphine and is a pain killer and is not showing in blood test. You seem to be taking more than 3 mg of xanax from the concentration in blood. Hope this helps. Let me know if I can assist you further. Dr. Vaishalee