What does a 50 ng/mL cut-off mean on a THC drug test?

A 50 ng/mL cut-off is the federal standard for detecting THC in urine. Results above this level are positive for marijuana use; results below this level typically indicate a negative test result.

How long does THC stay in the system?

For occasional users, THC stays detectable about 3–7 days; regular users, 7–21 days; chronic heavy users can test positive for up to 30 days or longer.

Can second-hand marijuana smoke cause a positive test?

No, normal second-hand marijuana smoke exposure won’t typically cause a positive THC test at the 50 ng/mL threshold unless exposure is prolonged, intense, and in an enclosed space.

What does a faint line on the THC test mean?

A faint line means negative for THC. Line intensity doesn’t affect accuracy—any visible second line (even faint) indicates THC levels below the 50 ng/mL cut-off, thus a negative result.

Is Exploro’s THC 50 ng/mL home test accurate?

Yes, Exploro’s THC 50 ng/mL test is providing results comparable to laboratory screenings and precisely meeting federal workplace testing standards.

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Exploro THC Tests for Home Use - Marijuana Drug Test Kit for Urine (15 Pack), Weed Detox Testing Kits with 50 ng/ml Cutoff Level

Product ID: 180019344

Details

Brand
Exploro
Number of Pieces
15
Special Feature
Accuracy &
Specific Uses For Product
Urine Test
Test type
["Urine Test"]

🔒15 individually sealed strips

🧪50 ng/ml cutoff sensitivity

⏱️5-minute rapid results

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₩23991

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Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Stay ahead of the test—detox smarter, not harder!

FAST CLEAR RESULTS - Get reliable, easy-to-read results in just 5 minutes—no guesswork, no stress.
DETOX PROGRESS TRACKER - Monitor your THC levels regularly to confidently time your next drug test.
ULTRA SENSITIVE DETECTION - Detects THC metabolites up to 35+ days post-consumption with a 50 ng/ml cutoff.
LAB GRADE ACCURACY AT HOME - 510(k) cleared & CLIA waived for trusted results without the lab hassle.
VALUE PACKED PEACE OF MIND - 15 sealed tests per pack ensure long-term readiness and budget-friendly reliability.

Exploro THC Tests for Home Use offer a professional-grade, 15-pack urine drug test kit with a 50 ng/ml cutoff level, delivering fast, accurate detection of THC metabolites up to 35+ days after use. FDA-cleared and CLIA waived, these easy-to-use strips provide clear results in 5 minutes, empowering users to track detox progress and confidently pass drug screenings—all from the comfort of home.

Specifications

ASIN	B07BZ4KNKL
ASIN	B07BZ4KNKL
Additional Features	Accuracy & Clarity
Best Sellers Rank	#1,807 in Health & Household ( See Top 100 in Health & Household ) #1 in Home Marijuana Tests
Brand Name	Exploro
Customer Reviews	4.4 4.4 out of 5 stars (15,943)
Date First Available	March 15, 2020
Is Discontinued By Manufacturer	No
Item model number	THC15
Manufacturer	Lendas UAB
Manufacturer	Lendas UAB
Manufacturer Part Number	7PMD6-UK
Model Number	THC15
Number of Items	15
Number of Pieces	15
Product Dimensions	0.75 x 4.72 x 4.33 inches; 1.45 ounces
Specific Uses For Product	Urine Test
Test Type	["Urine Test"]
UPC	741812897173
Unit Count	15 Count

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