Quick answer
Not reliably detected by standard amphetamine screens; a dedicated assay is needed. Urine is typically positive for about 1–2 days. In Delaware, marijuana status is: Recreational + medical legal.
Detection windows in Delaware
| urine | |
|---|---|
| Any use | roughly 1–2 days (specialised assay) |
| saliva | |
| Any use | hours |
| hair | |
| Any use | detectable on specialised testing |
| blood | |
| Any use | hours |
Detection windows are the same nationwide; only state law and workplace policy differ. Ranges vary with dose, frequency and the assay.
Testing in Delaware
Delaware allows workplace drug testing and employers may act on positive results. State legalization does not override employer drug policies, and a medical card does not shield an employee from testing.
Delaware does not provide broad off-duty cannabis employment protections; employers may maintain drug-free workplace policies and test under state law.
About Khat (cathinone)
Khat is a plant whose leaves contain cathinone, a stimulant chemically related to amphetamine. Standard amphetamine immunoassays often do not detect it.
Detection generally requires a dedicated mass-spectrometry assay; a negative standard panel does not rule out khat use.
Cathinone degrades quickly after harvest, which is one reason its presence is difficult to standardise across tests.
Frequently asked questions
How long does khat (cathinone) stay detectable in Delaware?
Detection windows do not vary by state — they depend on the substance, dose, frequency and specimen. See the table above for typical ranges.
Can an employer in Delaware test for khat (cathinone)?
Delaware allows workplace drug testing and employers may act on positive results. State legalization does not override employer drug policies, and a medical card does not shield an employee from testing.
Is marijuana legal in Delaware?
Delaware: Recreational + medical legal. Delaware legalized adult-use marijuana in 2023, and retail sales launched in August 2025. Adults 21 and older may possess up to one ounce, but home cultivation is prohibited. Employers may still enforce drug-free workplace policies and test employees.