---
product_id: 425262045
title: "Fentanyl Test Strip for Liquid and Powder Substances - 10 Test Strips Per Pack - Rapid Response"
brand: "btnx inc"
price: "฿780"
currency: THB
in_stock: true
reviews_count: 8
category: "Btnx Inc"
url: https://www.desertcart.co.th/products/425262045-fentanyl-test-strip-for-liquid-and-powder-substances-10-test
store_origin: TH
region: Thailand
---

# #1 global bestseller 98%+ lab-grade accuracy 5-minute rapid results Fentanyl Test Strip for Liquid and Powder Substances - 10 Test Strips Per Pack - Rapid Response

**Brand:** btnx inc
**Price:** ฿780
**Availability:** ✅ In Stock

## Summary

> 🔍 Stay one step ahead—test fast, test smart, stay safe.

## Quick Answers

- **What is this?** Fentanyl Test Strip for Liquid and Powder Substances - 10 Test Strips Per Pack - Rapid Response by btnx inc
- **How much does it cost?** ฿780 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/425262045-fentanyl-test-strip-for-liquid-and-powder-substances-10-test)

## Best For

- btnx inc enthusiasts

## Why This Product

- Trusted btnx inc brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Lab-Grade Accuracy:** Over 98% accuracy ensures you’re making informed, safe choices with confidence.
- • **Trusted by Experts:** Endorsed by a 2018 John Hopkins University study—science-backed harm reduction.
- • **Portable & Discreet:** Individually packaged strips fit seamlessly into your on-the-go lifestyle.
- • **Instant Peace of Mind:** Get reliable fentanyl detection in just 5 minutes—because every second counts.
- • **Comprehensive Detection:** Detects fentanyl and a wide range of analogues in powders, liquids, and urine.

## Overview

BTNX Rapid Response Fentanyl Test Strips deliver fast, highly accurate detection of fentanyl and its analogues in powders, liquids, and urine. Backed by a John Hopkins University study and trusted worldwide, these individually packaged strips provide a critical harm reduction tool with results in just 5 minutes and over 98% accuracy.

## Description

BTNX Rapid Response Fentanyl Test Strips are the only test strips recommended by a 2018 John Hopkins University Study. The technology was developed in Canada and tests for a comprehensive list of common fentanyl analogues. Testing for Fentanyl in powders, liquids, & urine is a harm reduction strategy. Fentanyl Test strips offer an easy and quick way to test powders and liquids for the presence of many Fentanyl analogues with no more than sterile water. These Fentanyl test strips come individually packaged for your convenience and safety. These tests were originally designed as urine tests but are endorsed by BTNX to work with many powders (diluted in water) and liquids with 98% accuracy. You can visit the manufacturer website for many videos and documents to support this including the 2018 John Hopkins University Study.

Review: Good test strips - Easy to use seems accurate functions as described.
Review: Be careful tricky instructions great test! - I like this product because it identifys fentanyl but with almost everything having fentanyl in it it would be great if it detected if the levels are high enough to take u out of here. Unfortunately it's substances with fentanyl in it that will not give you fentanyl poisoning. I wish they'd create a test that test to let you know if it's a safe amount. Overall still a great test. BEWARE THE INSTRUCTIONS ON THE BACK CAN BE CONFUSING! 1 LINE ANYWHERE MEANS POSITIVE TWO LINES EQUAL NEGATIVE!

## Features

- Can detect fentanyl and many other fentanyl analogues
- Time to result: 5 minutes
- Lowest detection limit & Greater than 98% accuracy
- #1 Global selling fentanyl test strips & reviewed by a John Hopkins University Study

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B09WWWDN21 |
| Best Sellers Rank | #72,230 in Health & Household ( See Top 100 in Health & Household ) #74 in Home Drug Tests |
| Customer Reviews | 4.3 4.3 out of 5 stars (488) |
| Date First Available  | March 30, 2022 |
| Is Discontinued By Manufacturer  | No |
| Item model number  | FYL-1248 |
| Manufacturer  | BTNX Inc |
| Product Dimensions  | 7 x 5 x 0.5 inches; 0.63 ounces |

## Product Details

- **Brand:** BTNX Inc
- **Manufacturer:** BTNX Inc
- **Material:** Fentanyl-reactive substrate
- **Ph Range:** 4.0-9.0
- **Unit Count:** 10.00 Count

## Images

![Fentanyl Test Strip for Liquid and Powder Substances - 10 Test Strips Per Pack - Rapid Response - Image 1](https://m.media-amazon.com/images/I/512wUxnu6mL.jpg)

## Questions & Answers

**Q: Can you use these on liquids and powders? The instructions included said it was a urine test. Please help!!**
A: Hello, 

Yes these strips were first developed in 2012 and originally developed as urine tests. Studies have shown that they are 98% accurate when used with diluted powders and liquids. While the original documentation states they are urine tests, they are 100% effective without urine.  

You can find supporting information on the manufacturer website where there are several videos and articles. 

https://www.btnx.com/HarmReduction

You can also see use instructions which are from the manufacturer in the gallery. These are officially sourced from the manufacturer.  

Here is a link to a video produced by the company the demonstrates how to use as well. 

https://youtu.be/-ngMXiNc6k4

I have also updated materials that ship with the product that re-enforce that these are 100% effective without urine.

**Q: Why does it say "This item cannot be shipped to your selected delivery location. Please choose a different delivery location. No matter what address?**
A: These are restricted products. Amazon has not updated the availability on new legislation but its set up by state. States like Tennesseese and Georgia should have the restrictions removed but Amazon has not updated yet. We are working on it with them. 

Texas and Florida are the 2 biggest states that these will not ship to currently via Amazon as they are restricted in those states.

**Q: What is the minimal amount of any given powdered substance needed in order to test?**
A: A pinch of powdered mixed with room temperature water is all that is needed.

**Q: Can you use these on urine ?**
A: Yes absolutely. You can test the urine directly.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good test strips
*by J***C on November 12, 2024*

Easy to use seems accurate functions as described.

### ⭐⭐⭐⭐⭐ Be careful tricky instructions great test!
*by A***. on May 23, 2023*

I like this product because it identifys fentanyl but with almost everything having fentanyl in it it would be great if it detected if the levels are high enough to take u out of here. Unfortunately it's substances with fentanyl in it that will not give you fentanyl poisoning. I wish they'd create a test that test to let you know if it's a safe amount. Overall still a great test. BEWARE THE INSTRUCTIONS ON THE BACK CAN BE CONFUSING! 1 LINE ANYWHERE MEANS POSITIVE TWO LINES EQUAL NEGATIVE!

### ⭐⭐⭐⭐⭐ Get them
*by H***8 on June 26, 2025*

Easy to use. Great to have on hand,

## Frequently Bought Together

- BTNX Inc Fentanyl Test Strip for Liquid and Powder Substances - 10 Test Strips Per Pack - Rapid Response
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**Shop now:** [https://www.desertcart.co.th/products/425262045-fentanyl-test-strip-for-liquid-and-powder-substances-10-test](https://www.desertcart.co.th/products/425262045-fentanyl-test-strip-for-liquid-and-powder-substances-10-test)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-03-01*