Forensic Drug Chemistry & Philippine Drug Laws

The scientific examination of suspected controlled substances to determine their chemical identity and, when required, their quantity or concentration.

Seized-drug analysis examines suspected substances or preparations, while toxicology examines substances or metabolites in biological specimens.

A substance whose manufacture, possession, distribution, or use is regulated under applicable law.

Republic Act No. 9165, the Comprehensive Dangerous Drugs Act of 2002, as amended.

The Philippine government body responsible for policy-making and strategy formulation concerning dangerous drugs prevention and control.

The government agency established under RA 9165 to implement and enforce dangerous drugs laws and coordinate drug law enforcement.

A synthetic stimulant belonging to the substituted phenethylamine and amphetamine family.

The hydrochloride salt form of methamphetamine, commonly encountered as a crystalline or powdered substance.

Methamphetamine is the parent compound, while methamphetamine hydrochloride is a salt containing the protonated drug and chloride counterion.

A central nervous system stimulant with local anesthetic properties.

Delta-9-tetrahydrocannabinol, commonly abbreviated THC.

A cannabinoid found in cannabis that differs pharmacologically from THC and is not generally considered intoxicating in the same manner.

An opioid, chemically known as diacetylmorphine.

An opioid analgesic.

A benzodiazepine with sedative, anxiolytic, and anticonvulsant effects.

A synthetic psychoactive substance with stimulant and entactogenic effects.

Chemical identity is established scientifically; legal classification depends on applicable laws and regulatory schedules.

A screening reaction in which a reagent produces an observable color change that may be consistent with certain substances.

Presumptive screening of certain drug classes, including some opioids and amphetamine-related substances.

Presumptive screening for cocaine using cobalt thiocyanate chemistry.

Presumptive screening for cannabis-related material.

Different compounds may produce similar reactions, and color observations may be affected by mixtures and other conditions.

A chemical examination in which a substance reacts with a reagent to produce crystals whose characteristics may assist identification.

To provide sufficiently selective analytical evidence supporting the identity of the questioned substance.

Different methods provide complementary information and reduce the risk of misidentification.

It provides molecular absorption information useful for comparing a sample with reference spectra.

It provides mass-to-charge information about ions and fragments that can assist chemical identification.

The elapsed time between sample introduction and detection of a component under specified chromatographic conditions.

No. Different substances may have similar retention times, so additional selective analytical information is needed.

A reference material with documented identity and relevant properties used to support analytical comparison or measurement.

A known substance added in a controlled amount to help account for variation in sample preparation or instrumental response.

A separately prepared reference solution used to establish an instrument response relationship for quantitative analysis.

To improve uniformity so that a selected portion better represents the submitted material.

A portion selected using an appropriate sampling approach to provide information about the material or population being examined.

It helps support defensible inferences about the tested population while recognizing the sampling method's limitations.

A sample formed by combining portions from multiple items, potentially affecting the ability to attribute findings to individual items.

Different packets may contain different substances, and combining them can obscure item-specific findings.

Net weight excludes packaging or containers, while gross weight includes them.

Statutory penalties or evidentiary determinations may depend on the legally relevant quantity of the substance rather than its packaging.

The proportion of a specified drug compound within the analyzed material, expressed on a clearly defined basis.

Identification establishes what substance is present; purity determination measures how much of the material consists of that substance.

An additional substance mixed with a drug preparation that may dilute, modify, or otherwise affect its composition.

It may affect analytical results, sample composition, and interpretation of the submitted material.

A chemical subject to regulation because of its potential use in the unlawful manufacture of dangerous drugs.

No. Investigators must establish the legally relevant circumstances, authorization status, and supporting evidence.

To formally report the submitted specimen, examinations performed, findings, and conclusions of the forensic laboratory.

The result is preliminary and requires suitable confirmatory analysis before reporting definitive identification.

No. Conclusions about untested packets require a scientifically defensible sampling basis and appropriately limited reporting.

5 grams.

Investigate the discrepancy and avoid identifying the substance as cocaine solely from retention time.