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WiseBatch test strip kit with hardshell carry case
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FYL & XYL Test Strip Kit packaging with test strips and case
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Detailed instructions for overdose test kit with QR code
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Overdose prevention kit attached to backpack strap
WiseBatch test strip kit with hardshell carry case
Overdose prevention kit with test strips, case, and tools
Open overdose prevention kit with test strips and supplies inside
Closed overdose prevention kit with test strips and tools
Drug testing kit with test strips and instructions on a white background
WiseBatch test strip kit with hardshell carry case
FYL & XYL overdose test kit with case and test strips
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Drug test kit with instructions and QR code on a white background
FYL & XYL Test Strip Kit packaging with test strips and case
Hand holding a test strip for overdose detection
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Infographic showing test strip components and usage steps
Test results guide with positive and negative indicators
FYL XYL overdose prevention kit test strip in hand
Overdose prevention kit attached to backpack strap
WiseBatch test strip kit with hardshell carry case

FYL & XYL Test Strip Kit - Includes 5 WiseBatch FYL & 5 WiseBatch XYL Test Strips + Hardshell Carry Case + Mixing Container + 10mg Spoon and Instructions

$24.95
/
Shipping calculated at checkout.
Pack Size
Download FYL Test Strips Instructions Guide

Free shipping when your test strips and kits total $49.90 or more.

Purchase order or tax-exempt? Request a quote or email info@overdosekits.com.

  • COMPLETE OVERDOSE PREVENTION KIT — Includes hard-shell carry case, five WiseBatch FYL & five WiseBatch XYL test strips, mixing container, 10 mg scoop, and instructions. Add Naloxone nasal spray to complete a full kit (naloxone not included).
  • FAST & EASY TESTING – Instructions printed on each pouch plus QR code linking to a step-by-step video guide. Simply mix sample with water, dip strip below MAX line for 15 seconds, and read results in about 5 minutes.
  • HIGH-SENSITIVITY DETECTION – Detects FYL and 20+ analogs at 200 ng/mL with a 98–99% accuracy rating in reproducibility testing. Every batch lab-verified for quality control. Designed to detect trace levels of XYL in diluted samples, helping identify contamination that may not otherwise be visible.
  • PORTABLE & READY FOR EMERGENCIES — Durable hard-shell case sized for strips and 1–2 naloxone doses, fits in a bag or pocket, includes optional carabiner, and labeled “Overdose Prevention Kit” for fast identification.


Single: 00810073724433

10 Units: 00810073724440

100 Units: 00810073724457

6" L x 3.5" W x 2" H

  • Technical and/or procedural errors using the test, as well as other substances and unknown factors or variables may interfere with results.  
  • A positive test result indicates the presence of FYL only, and does not indicate quantity.  
  • A negative test result does not indicate that no FYL exists in the substance being tested, but only that the presence may be below the test’s detection level.  
  • Overdose Kits LLC does not encourage the production, use, supply, or distribution of illegal drugs or controlled substances in any way. This test is intended for harm reduction purposes only.  
  • A positive or negative test does not indicate that the substance being tested is safe to use. This test is not intended to determine the purity or composition of the substance being tested, or the existence of any other substance. 
  • Overdose Kits LLC cannot verify the accuracy of this test after its expiration date.  Storage and procedure instructions must be followed to obtain the most accurate test result.  
  • Any substance expected to contain FYL should be treated with extreme caution as exposure to a small amount can lead to significant health-related complications, respiratory depression, or death.

Shipping

Ships from our warehouse in Anacortes, WA by UPS or USPS. Please allow 1–2 business days for processing; delivery is typically 3–7 business days.

Once your order ships, tracking information is emailed to the address entered at checkout.

Purchase orders and tax-exempt orders accepted. Request a quote or email info@overdosekits.com and we'll send you an estimate for approval.

SAM.gov Registered
UEI: JA3XNLL642J5
CAGE: 8W1R9
D-U-N-S: 12-270-5113

One Year Warranty

  • Every product we make is guaranteed for one year or we replace it.
  • 30 day free refund.
  • Must be in new condition.

Frequently Paired Together

Lightweight Compact Design

The case has a highly protective hardened shell that is lightweight, easy to store and clearly labeled as Overdose Prevention Kit.

Slim design with no wasted space, so the case can be moved and stored without concern.

Ready-To-Use Kit

Includes hardshell carry case with dual pouches, five FYL & five XYL test strips, mixing container, 10mg spoon and instructions. 

Add Narcan or Generic Naloxone nasal spray to complete a full overdose prevention kit.  Naloxone nasal spray not included.

Overdose prevention kit with test strips, case, and tools
Two drug test strips with instructions on a white background

Simple Testing Instructions

Add substances with the 10mg spoon to the mixing container filled with water and stir. 

Dip test strip below the max water line for 15 seconds.  Wait 5 minutes for the test results to appear.

Results will show 1 or 2 lines. 1 is hot (Positive) - 2 is not (Negative).

Highly Visible & Accessible

A convenient carabiner allows for easy carrying, hanging and attachment to equipment or apparel.

Easily stored in a bathroom cabinet or vehicle glove department.

Video - How to Use FYL Test Strips

Frequently Asked Questions

Everything you need to know about the FYL & XYL Test Strip Kit with Hardshell Carry Case.

What comes in the kit?

A hard-shell carry case with dual pouches, five WiseBatch FYL test strips, five WiseBatch XYL test strips, a mixing container, a 10 mg scoop, and instructions.

Does it include naloxone?

No. Add naloxone nasal spray to complete a full overdose prevention kit. The case is sized for the strips and 1 to 2 naloxone doses.

How big is the case?

It measures 6" L x 3.5" W x 2" H and fits in a bag or pocket.

How do I carry it?

It includes an optional carabiner and is labeled “Overdose Prevention Kit” for fast identification.

How do I use the strips?

Mix the sample with water, dip the strip below the MAX line for 15 seconds, and read the result in about 5 minutes. Instructions are printed on each pouch, with a QR code linking to a step-by-step video.

How sensitive are they?

The FYL strips detect FYL and 20+ analogs at 200 ng/mL with a 98–99% accuracy rating in reproducibility testing, and every batch is lab-verified. The XYL strips are designed to detect trace levels of XYL in diluted samples.

Is there a guide or video?

Yes. Download the FYL Test Strips Instructions Guide near the top of this page, or scroll up to the “Video - How to Use FYL Test Strips” video.

What do the results mean, and what don’t they tell me?
  • A positive result shows FYL is present, not how much.
  • A negative result doesn’t rule out FYL; it may be present below the test’s detection level.
  • Neither result means a substance is safe to use. The test doesn’t determine purity or composition, or detect other substances.
  • Technical or procedural errors and other substances can interfere with results.

The test is intended for harm reduction purposes only.

Does naloxone reverse XYL?

No. Naloxone does not reverse the effects of XYL. Because XYL is often mixed with opioids, it’s still recommended to give naloxone in a suspected overdose and call 911 right away.

What should I do if a substance may contain FYL?

Treat it with extreme caution. Exposure to a small amount can cause serious health complications, respiratory depression, or death. Keep naloxone on hand and call 911 in an emergency.

Do you offer bulk pricing?

Yes. It’s sold as a single, 10 units, or 100 units. Select your quantity under Size.

How fast will my order ship?

10 units or fewer: fulfilled by Amazon, ships within 48 hours and arrives in 3 to 5 business days.

100 units or more: ships from Anacortes, WA via UPS or USPS. Please allow 1 to 2 business days for processing, then 3 to 7 business days for delivery.

Tracking information is emailed to the address you enter at checkout.

Is there a warranty?

Yes. Every product we make is covered by a one-year warranty. If it fails within a year, we’ll replace it.

What’s your return policy?

We offer a free refund within 30 days. The item must be in new condition.

I have another question. How do I reach you?

Send us a message using the chat button at the bottom of the page. We’ll respond the same day or sooner.

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