Frequently Asked Questions

If you have questions about testing, please read through the answers below. If you are still looking for an answer please contact us
at 877-879-1815 or use our Contact Form.

Your healthcare provider will determine whether you will be tested based on your medical needs.

Screening tests are performed using reagent based systems that determine the presence or absence of drug compounds in the urine. While these tests can identify groups or classes of drug compounds that may be present in a patient sample, they can rarely be used to identify a specific drug or drug metabolite. This is why they are known as non-specific assays, and are considered presumptive screening tests. Another test is needed to determine exactly what drug compound, and what quantity, has triggered the positive presumptive screen.

Confirmatory tests are the next step in the testing process. To further pin-point the identity of a drug, an alternate methodology that is specific and sensitive to each individual drug compound must be employed. Kashi utilizes a state-of-the-art technology known as Liquid Chromatography/Mass Spectrometry (LC/MS) to confirm the presence and amount of specific drug compounds at the molecular level. LC/MS is capable of detecting a wide variety of compounds, including drugs, and is considered the “gold standard” by experts in many fields.

Healthcare providers may select which test works best for their patient’s unique needs. Some providers prefer confirmation on all presumptive positive screens, while others request confirmation of only select presumptive screens. Kashi strives to offer services tailored to every healthcare provider. If you have further questions, please contact our customer service representatives at (877) 879-1815.

All Kashi Toxicology pharmacogenetic results are available in four to five business days from receipt of samples, appropriate payment information, and a completed test requisition. Overnight STAT testing is also available for an additional fee.

Kashi maintains your privacy in accordance with Health Insurance Portability and Accountability Act (HIPAA) regulations. Kashi does not store patient DNA and each specimen is securely discarded after completion of testing.

Your healthcare provider’s staff will provide direction on how to submit a urine sample for testing. Please follow the instructions carefully. The collection device provided by your healthcare provider may contain instant-read test strips. Please do not tamper with the test strips. Your healthcare provider’s staff will interpret the preliminary results, and may then send the sample to an outside laboratory, such as Kashi Toxicology, for further analysis and/or additional testing.

The laboratory will bill your insurer directly. Then, your insurance company will send you an Explanation of Benefits (EOB). The EOB is not a bill, it is simply a statement that shows how your insurer processed the claim for the test. Depending on your insurance carrier, you may receive a statement for a co-payment or a deductible. If the Insurance company does not pay for testing, you are responsible for the cost of testing.  Sometimes the insurance company will send payment to you instead of to the lab, you are responsible for paying the lab bill in this situation.

While age, gender, and diet may affect a person’s response to medication, genetics can also play a large role, particularly if you are taking more than one prescription drug. Pharmacogenetic testing can help healthcare providers understand how each patient’s body processes medications, enabling them to determine which medications may be the best option, what may be the most effective doses, and how multiple medications may work together. With the results from genetic testing, your healthcare provider can personalize medication therapy, increasing your chance of successful treatment and a healthier life.

Shipping and Specimen Requirements


Liquid chromatography-tandem mass spectrometry (LC-MS/MS)

Preferred Specimen(s)

Urine collected in a plastic leak-proof container labeled with patient name, DOB and collection date.

Optimal volume:

5ml (3ml minimal volume)

Transport temperature:

Room temperature


Overnight shipping with FEDEX

Specimen stability:

Room temperature: 4 days*

Refrigerated: 2 weeks

*For methylphenidate the stability at room temperature is 24 hours.

Test schedule:

Samples accepted Monday through Friday; report available within 24-48 business hours

The patient signature area(s) of the Kashi Requisition for Pharmacogenetic Urine Drug Testing provide more than just chain-of-custody documentation. A signature also documents the patient’s awareness of their HIPAA rights, certifies that theirs is the sample provided, and allows Kashi to bill the patient’s insurance, as well as supply results to the requesting party and ordering physician.