Updated on 19 October, 2021
Marquis Reagent is among the first pre-employment tests for MDMA (ecstasy, speed, MDA, cocaine, meth/amphetamines) and other drug-related substances. The test can be given both in-office and at home. The test consists of two parts: A panel of blotting paper and a collection kit. Most kits include a collection stick and test reagent. Test results are usually mailed to the client in about a week.
There are several manufacturers of reagent kits. The kits are available from several manufacturers such as marquis reagents, Spectra Labs, Reagent Testing Systems, Reagent Expert, and Pure labs. Kits can also be purchased from many on-line drug stores, home drugstores, or from online vendors. These kits can also be ordered through mail order. However, ordering through mail order requires a valid identification card. Some on-line mail order companies sell these kits with instructions for home use only, and do not provide information regarding purchase, delivery, or return.
Due to the nature of these reagents, it is extremely important to follow the manufacturer's instructions when using them. If one does not follow the instructions, serious side effects can occur. Most of the commonly used reagents in the clinical setting include MDA, ecnussiate, MDMA, Methylenedioxymethane (MDMA), N-methyl-d-aspartate (N-MDMA), and N-methyl-d-glucopyrine (NGLP). Some other common reagents used in the clinical setting are fluoxetine (Prozac), alprazolam (Amantron), and lorazepam ( Lorazepam).
Most reagents used to test for contaminants in urine samples are sensitive to light, making them ideal for in-vitro fertilization (IVF). Because of this, a reagent test kit can also be used to determine the purity of blood, the most widely used procedure in medical science today. The majority of kits available will detect any amount of particulates that may be present in the blood sample. Depending upon the sensitivity of the reagents and the quality of the reagents themselves, the percentage of parts per million (PPM) of each substance that are detected can vary.
MDA, or Microencapsulation Enhanced Distribution Form, is a particularly popular variety of reagent test kits. MDA is a mixture of two chemicals: Methylenediamine (Methylene Blue) and N-methyl-d-aspartate (N-methyl-DGAs). The initials 'Methyl' and 'DGAs' stand for methylenediamine and n-methyl-d-aspartate, respectively. MDA is a highly selective, blue wavelength dye; the other forms of MDA have broader wavelength bands. Both MDA and N-methyl-DGAs are extremely sensitive to biochemical and biological agents and are extremely useful in the diagnosis and treatment of exposure-related illnesses such as occupational asthma, drug allergies, eczema and hepatitis.
Reagent kits for MDA and N-methyl-DGAs can be purchased in single dose, volume-dependent load-training formulations. There are three common load-training systems: one vial for MDA, two for N-methyl-DGAs, and a single vial for all three. The vials are made of latex, are calibrated and can be customized with an appropriate concentration range for individual testing needs. All kits for urine and blood concentrations come with detailed instructions for their use.
MDA and N-methyl-DGAs are well suited for the rapid analysis of very fast occurring or repetitive substance exposures. Reagents for MDA and N-methyl-DGAs are ideal for use in the evaluation of drug residues after the research is completed. These reagents are also very useful in the analysis of physiological processes such as the absorption of drugs in human plasma protein assays. Reagent kits for MDA and N-methyl-DGAs can be used to determine if a substance is contaminated, inactive or excreted. In addition, reagents can be used to measure the concentration of a substance on a dry powder or in aqueous solutions.
A final choice for any drug test kit is whether to use reagents for urine or blood tests. Both types of test kits have advantages and disadvantages, depending on the type of substance to be tested and the number of tests to be performed. Generally speaking, the more tests to be performed, the greater the cost of the entire kit.