Fingernail and Toenail Drug Testing

Nail samples capture substances from blood as they grow, embedding biomarkers in the keratin fibers. Fingernails, being thicker than hair, often store more substances, detectable for 3–6 months after use. Environmental exposure is instantly traceable, while ingested substances can be detected as early as 1–2 weeks after use, depending on the substance and individual factors.

Samples are self-collected under trained supervision, with a clipping of 2–3mm from each fingernail providing the optimal size for testing. Larger profiles may require additional samples.

Premier Drug & DNA Testing Services, LLC offers the following drug test panels for fingernail and toenail samples:

5-Panel Drug Test: Amphetamines, Marijuana (THC), Cocaine, Opiates (including extended prescription opiates), PCP (Phencyclidine)

7-Panel Drug Test: All substances in the 5-panel test, plus: Benzodiazepines, Barbiturates

9-Panel Drug Test: All substances in the 7-panel test, plus: Methadone, Propoxyphene

10-Panel Drug Test:All substances in the 9-panel test, plus: Oxycodone

12-Panel Drug Test: All substances in the 10-panel test, plus: Meperidine, Tramadol

14-Panel Drug Test:

All substances in the 12-panel test, plus: Fentanyl, Sufentanil

15-Panel Drug Test:

All substances in the 14-panel test, plus: Ketamine

16-Panel Drug Test:

All substances in the 15-panel test, plus: Suboxone

17-Panel Drug Test:

All substances in the 16-panel test, plus: Ambien

18-Panel Drug Test:

All substances in the 17-panel test, plus: Kratom

Nail Drug Detection Times

All Drugs

Fingernail
Toenail

Detection Period

Up to 3-6 months

Up to 8-14 months

Collection Amount For 5-Panel

100 milligrams. Clipping must be at least 2 - 3 millimeters long (about the width of a quarter).
Larger panels will require more.