By Pat Anson, Editor

Our recent series of stories on urine drugs screens – and how they are often unreliable or misinterpreted by doctors – struck a note with several readers who said they were falsely accused of abusing or misusing drugs.

Timmi Jernigan is a 54-year old retired educator in South Carolina who says she was “fired” last month by her doctor after a single drug test. Timmi has a prescription for Adderall – a drug used to treat attention deficit disorder – but the amount detected in her system was low.

A week after the test, she received a registered letter from the doctor discharging her.

"On 4/23/15 a drug test was performed which shows you are not taking the controlled substance prescribed. This in in violation of your drug agreement and we will no longer continue your care. We will see you for an emergency only for the next thirty days. During this time we will not prescribe any controlled substances. If you feel you need drug rehabilitation please contact our office for a referral,” the letter said.

 “Just like that. No follow-up appointment to discuss this test. I called and they would not let me see the doctor,” Timmi wrote to Pain News Network.

Timmi wanted to remind the doctor that a month earlier they had agreed to lower the amount of Adderall she was taking because it might worsen her high blood pressure.

“To suggest (per the letter) that I need drug rehabilitation because there is not enough amphetamine in my system is ludicrous at best,” she wrote.

Now Timmi is worried that the discharge letter in her medical files will damage her reputation and prevent her from finding another doctor.  Adding insult to injury, she received a bill for $1,300 from Ameritox, the drug screening company that performed the test – which is not covered by her insurance.

"I was not made aware of the huge cost involved in this ‘not medically necessary’ test. I was not even given a choice,” Timmi said.

"Anytime you are tested to this degree, you are convicted before being charged,” wrote Kim Miller, advocacy director of the Kentuckiana Fibromyalgia Support Group. “If you are the patient testing with a false positive for marijuana or a drug you are not prescribed, it can mean your last prescription of pain medication for a crime you didn't commit! Yes, I said ‘crime’ because that's the way chronic pain patients are treated anymore.”

False Negatives

Sometimes it’s not a false positive that gets a patient in trouble, but a false negative that indicates they may not be taking a prescribed medication – a red flag that could indicate the drug is being diverted.

That’s what happened to another woman – we’ll call her “Kathryn” -- who prefers to remain anonymous. Kathryn was accused of not taking klonopin, a prescribed medication for anxiety, after it didn’t show up in her drug screen.

“I was taking it as prescribed but no one listened. I was treated horribly,” Kathryn wrote. “After a lot of calls, the support of my husband, primary care doctor, insistence with staff (who made me feel like a criminal) and a revisit with doctor, Doc agreed med was at low enough level it wouldn't necessarily show up.”

“It's a shame though that patients have to pay literally and figuratively for the urine tests and revisits,” said Kathryn, who suffers from back pain, osteoarthritis, fibromyalgia and carpal tunnel syndrome.

Some readers did their own detective work to find out why they tested positive for a drug they weren’t taking. One shared with us a website called AskDocWeb that keeps a list of hundreds of medications, over-the-counter drugs, foods and even household products that can trigger a false positive. Poppy seeds in a muffin, for example, can trigger a false positive for opiates. And the pain reliever ibuprofen could get you flagged for marijuana.

“All this, and there is no scientific evidence to support that urine drug screens are curbing addiction. Would our money be better spent on programs to help those with addiction, which would not interfere with people who use their medications responsibly? Is a middle man once again driving up the costs of healthcare?” asked Celeste Cooper, a retired nurse and fibromyalgia advocate.

For more information about the $4 billion dollar a year drug screening industry, the Milwaukee Journal Sentinel has a story about the "Hidden Errors" found at drug testing laboratories.