25mL Negative Urine Control

25mL Negative Urine Control - One Screen

The One Screen 25mL Negative Urine Control is a synthetic urine solution meticulously formulated to simulate human urine, ensuring the accuracy and reliability of urine drug testing procedures. Designed for use with all handheld onsite drug screening devices, this control solution provides a consistent negative result, serving as a critical component in quality control protocols.

One of the standout features of this product is its impressive stability. Unopened, it remains stable for up to 24 months when refrigerated (35–46°F) and up to 12 months at room temperature (77°F). After opening, the control solution maintains its integrity for six months if frozen or until the expiration date, whichever comes first. This extended shelf life ensures that laboratories and testing facilities can rely on the product.

The synthetic urine-based matrix of the One Screen control closely mimics the chemical composition of human urine, including pH, specific gravity, and other key parameters. This similarity ensures compatibility with various testing systems and enhances the accuracy of test results. Moreover, the inclusion of 16 drug constituents within a single control vial, allows for comprehensive testing across multiple substances, streamlining the quality control process.

Ease of Use, Stability and Synthetic

Ease of use is another significant benefit. The product comes in ready-to-use 25 mL bottles, eliminating the need for preparation and reducing the potential for user error. This convenience is particularly valuable in high-throughput environments where efficiency is paramount. Additionally, the control solution is recommended by the majority of handheld device manufacturers, underscoring its reliability and effectiveness in various testing scenarios.

Incorporating the One Screen 25mL Negative Urine Control into your testing protocol not only enhances the reliability of your drug screening processes but also supports adherence to regulatory standards. By providing a consistent negative control, it helps identify potential issues with testing devices, thereby reducing the risk of false positives or negatives and ensuring the validity of test results.

In summary, the One Screen 25mL Negative Urine Control offers a robust solution for quality assurance in urine drug testing. Its synthetic composition, extended stability, comprehensive testing capabilities, and ease of use make it an indispensable tool for laboratories, clinics, and organizations committed to maintaining high standards in drug screening procedures.

Features & Benefits:

• Synthetic Urine Matrix: Developed to closely mimic the chemical composition of human urine, ensuring compatibility with multiple testing platforms.

• Ready-to-Use Format: Pre-mixed liquid solution eliminates the need for preparation, saving time and reducing errors.

• Extended Stability: Unopened controls are stable for up to 24 months when refrigerated (35–46°F) and up to 12 months at room temperature (77°F). After opening, controls remain stable for six months if frozen or until the expiration date, whichever comes first.

• Comprehensive Testing: Contains 16 drug constituents within a single control vial, to support a wide range of testing requirements.

• Manufacturer Recommended: Endorsed by the majority of handheld device manufacturers for quality control purposes.

• Convenient Packaging: Available in ready-to-use 50 mL bottles, facilitating ease of use in various testing environments.

• FREE shipping on orders of 100 controls or more. 

• In addition to this, bulk pricing structures allow you to save even more.

• For inquiries or bulk purchases, call Cody at 318.798.3306.

Why Choose American Screening Corp

• Superior Quality: Our urine controls are meticulously crafted to meet rigorous quality standards. Each product undergoes thorough testing to ensure consistency and reliability, providing confidence in every test result.

• Ease of Use: Designed with user convenience in mind, our urine controls come in ready-to-use formats, eliminating the need for complex preparation. This simplicity enhances efficiency and reduces the potential for user error.

• Compliance with Standards: ASC's urine controls are manufactured in adherence to industry standards. This compliance ensures that our products meet the necessary regulatory guidelines for quality assurance.

• Excellent Customer Service: Our dedicated support team is committed to providing exceptional customer service. We work closely with clients to understand their specific needs and offer tailored solutions, ensuring satisfaction at every step.

• Guaranteed Lowest Pricing: We strive to offer the most competitive pricing in the market. With quantity discounts available, our clients benefit from cost-effective solutions without compromising on quality.

How to use 25mL Negative Urine Control

Preparation: Ensure the liquid urine control is stored according to the manufacturer's guidelines, typically at 2–8°C (36–46°F). Do not freeze unless specified. Before use, allow the control to reach room temperature (20–25°C) to ensure accurate results. Gently swirl or invert the bottle several times to ensure homogeneity. Avoid vigorous shaking to prevent foam formation.

Application Methods: There are two common methods for applying liquid urine controls: Use a dropper to apply the control solution directly onto each reagent pad of the test strip. Ensure each pad is thoroughly saturated without over-saturating. Pour the control solution into a clean container. Dip the test strip into the solution, ensuring all reagent pads are immersed. Remove the strip promptly to prevent leaching of reagents.

Reading and Recording Results: Follow the manufacturer's recommended timing for reading results after application. Compare the color changes on the reagent pads to the provided color chart or use an automated analyzer if available. Record the results, including date, time, lot numbers of the control and test strips, and any observations.

Post-Test Handling: After use, promptly recap the control bottle and return it to the recommended storage conditions. Opened controls are typically stable for a specified period, such as 30 days at room temperature or until the expiration date if refrigerated. Avoid touching the dropper tip or pouring spout to any surfaces to prevent contamination.

Troubleshooting: If control results fall outside the expected range, consider the following steps: Verify that the control and test strips are within their expiration dates. Make sure you follow proper storage and handling procedures. Repeat the test with a new control or test strip.

FAQ – Liquid Urine Control

1. What are Urine Controls?

Urine controls serve as quality control solutions that help verify the accuracy, consistency, and reliability of drug testing and urinalysis systems. They mimic real urine and contain known analyte levels to ensure instruments and reagents function correctly.

2. Why are Urine Controls important?

They help labs to Confirm test accuracy, Detect faulty instruments or reagents, Prevent false positives or negatives and Comply with regulatory standards

3. What types of Urine Controls are available?

Negative Controls contain no drugs or analytes and confirm that systems don’t produce false positives.

Positive Controls include specific drug concentrations to confirm test sensitivity and detection accuracy.

4. What tests use Urine Controls?

Urine controls support: Drug screening (workplace, clinical, forensic), Urinalysis (e.g., kidney, infection, diabetes testing) and Toxicology workflows and laboratory research

5. Are Urine Controls made from real urine?

No, manufacturers synthetically formulate urine controls to replicate human urine properties and deliver consistent analyte concentrations for accurate testing.

6. How do Urine Controls improve lab efficiency?

They reduce retesting, minimize errors, and streamline quality control—helping labs save time and maintain test accuracy.

7. Are Urine Controls compatible with all testing systems?

Yes. They work with urinalysis dipsticks, immunoassays, chromatography systems, automated analyzers, and rapid drug screening devices.

8. Do they contain preservatives?

Some controls contain preservatives to extend shelf life, while others require freezing or lyophilization based on storage requirements.

9. How long do they last after opening?

Most liquid controls remain stable for 7 to 30 days after opening. Always follow the manufacturer's storage and expiration guidelines.

10. Can forensic labs use Urine Controls?

Yes, forensic toxicology labs use certified urine controls to validate drug test accuracy for legal and court-admissible procedures.