GA500 Rare Earth Fluorescence Method for Hair Testing

Introduction

Currently, both domestic and international drug issues, including traditional and new drugs, online and offline drug crimes, are intertwined, posing severe risks to public safety, health, and societal stability. National and law enforcement efforts in drug prevention are increasingly robust. With a plethora of drug testing methods and technologies available, the focus in law enforcement is on developing fast, accurate, and interference-resistant detection methods for drug use. This article highlights a cutting-edge hair drug testing device based on rare earth fluorescence technology.

Advantages of Hair Testing

Drug Distribution in the Human Body: Flowchart

According to the Ministry of Public Security’s "Drug Testing Procedures Regulations": Article 6 specifies that the testing samples can include urine, blood, saliva, or hair from the person being tested.

As illustrated in the diagram, drugs circulate through the human body in a specific sequence. Hair has a longer retention time for drugs compared to other samples due to its growth cycle and lower susceptibility to interference. For instance, urine is often affected by false-positive results due to medications, while saliva can be influenced by factors like chewing gum. Therefore, hair drug testing is considered the optimal choice for rapid drug detection.

Here is a detailed comparison as shown in the table:

Test Type	Blood	Saliva	Urine	Hair
Timeliness	24 Hours	3 Days	7 Days	6 Months
Disturbed	Very Low	Extremely High	Moderate	Low
Price	The Most Expensive	Cheap	Cheap	Medium
Quick Inspection	No	Yes	Yes	Yes

Rare Earth Fluorescence Detection Method

Principle Diagram of Hair Drug Testing Based on Rare Earth Fluorescence Detection Method

Optosky, leveraging its 20 years of experience in the optical field and extensive practical experience in drug testing, has developed a cutting-edge hair drug testing technology based on the rare earth fluorescence detection method. The principle (as shown in the diagram) involves:

1.Labeling Antigens or Antibodies with Lanthanide Elements: Lanthanide element chelates produce fluorescence when excited by ultraviolet light, with fluorescence intensity proportional to the concentration of the target substance.

2.Employing Proprietary Time-Resolved Technology: Measures fluorescence while detecting both the wavelength and time parameters of the spectrum to resolve signals. This approach effectively eliminates non-specific fluorescence interference, greatly enhancing analysis sensitivity.

Rare earth fluorescence analysis offers significant advantages over traditional methods like colloidal gold assays and chromatography. The specific advantages are detailed in Table 2. Therefore, in the field of rapid drug testing, choosing a hair testing device based on the rare earth fluorescence method is undoubtedly the superior option.

	Chromatography	Elisa	Colloidal Gold Method	Fluorescence Analysis
Detection Time	About 2 Hours	About 2 Hours	5-10 Minutes	5-10 Minutes
Sensitivity	High	Low	Low	High
Operation Steps	Complex	Complex	Simple	Simple
Specificity	High	High	Low	High
On-Site Inspection	Not Achievable	Not Achievable	Achievable	Achievable

Introduction to GA500

The GA500 is a cutting-edge drug testing device developed by Optosky using rare earth fluorescence detection technology. This next-generation product offers several advantages in drug analysis:

• Advanced Technology: Utilizes state-of-the-art rare earth fluorescence technology.

• Rapid Detection: Provides qualitative and quantitative analysis within 10 minutes.

• High Sensitivity: Detects drug concentrations as low as 0.2 ng/mg, meeting industry standards set by drug enforcement associations.

• Convenient Sampling: Requires only a small amount of hair (5 mg), ensuring privacy and reducing tampering risks.

• Evidence Correlation: Features an integrated high-definition camera and ID card reader for photographing and verifying the identity of individuals on-site.

• On-Site Processing: Equipped with a thermal printer to print results immediately for use by law enforcement in drug prevention and control. (See image below)

• Extensive Database: Capable of detecting various drugs, including morphine, methamphetamine (commonly known as ice), ketamine (often referred to as K powder), mephedrone, MDMA (Ecstasy), cocaine, and synthetic cannabinoids like K2/K3/K4.

In the field of rapid drug testing, the GA500 is a superior choice due to its advanced technology and comprehensive capabilities.