Unknown Contaminant Identification
Identify particles, residues, fibers, films, deposits, and other unknown materials using orthogonal analytical evidence.
Overview of Counterfeit Analysis Services
Counterfeit and falsified pharmaceutical investigations usually involve two linked questions: whether the suspect article is consistent with an authentic reference, and which specific physical or chemical differences explain that conclusion. Triclinic approaches these projects as multidisciplinary comparisons of the dosage form, packaging, label, adhesive, seal, ink, container, cap, and any available authentic lots.
The strongest studies preserve the article whenever possible, document the chain of custody, and start with non-destructive or minimally destructive methods before progressing to destructive testing. Optical microscopy, calibrated measurements, Raman microscopy, FTIR microspectroscopy, SEM/EDX, and spectral-library searching can be combined with direct authentic-versus-suspect comparisons so that conclusions do not rest on one weak signal.
- Suspect tablets, capsules, injectables, bottles, labels, induction seals, caps, cartons, raw materials, or excipients need comparison to an authentic reference.
- A label, ink, adhesive, polymer container, seal, coating, core, or embossing/debossing feature does not visually match the expected product.
- The issue may involve wrong active, wrong excipient, altered packaging, relabeled authentic product, substituted dosage form, or tampered container closure.
Counterfeit Product Identification Mini Case Studies
Triclinic's counterfeit-analysis work is built around direct comparison of suspect articles against authentic reference materials. The examples below show how visual inspection, optical microscopy, IR spectroscopy, Raman spectroscopy, and packaging or seal comparisons can be combined to separate true counterfeiting from legitimate production variation.
Mini Case Study #1: Final dosage container authenticity
Goal: Determine whether a submitted final dosage container was authentic or potentially counterfeit. The investigation used a multidisciplinary workflow that included visual inspection, optical microscopy, infrared spectroscopy, and Raman spectroscopy.
The label, container, and induction seal were evaluated as separate evidence streams. Differences between the suspect and authentic articles were compared against authentic-material basis sets so that observed packaging differences were not over-interpreted as counterfeiting without supporting chemical evidence.
Conclusion: The submitted materials were authentic. The observed differences were attributed to production-run variation in packaging, including use of a different printing company, rather than counterfeit substitution.
Mini Case Study #2: Suspect tablet authenticity
Goal: Identify whether suspect tablets from an open final-dosage container were authentic or counterfeit. Three tablets appeared suspect and were compared against authentic reference product using physical inspection and chemical identification.
Visual and dimensional differences supported the counterfeit hypothesis before spectroscopy was performed. The suspect tablets differed in color, embossing, and physical dimensions from authentic material. Raman spectroscopy was then used to compare the suspect tablet to reference spectra and to identify key chemical components.
Conclusion: The suspect tablets were counterfeit. The tablets were identified as containing sildenafil citrate with microcrystalline cellulose and titanium dioxide, and the visual inspection results were inconsistent with the authentic reference product.
Typical analytical workflow
- Document packaging, lot markings, label dimensions, print quality, tear-tape edges, glue deposits, holograms, anti-counterfeit features, and visible product attributes.
- Use optical microscopy and calibrated imaging to compare shape, color, defects, coatings, cores, embossing/debossing, and surface features.
- Use Raman and FTIR to compare tablets, coatings, labels, adhesives, inks, seals, containers, caps, and packaging polymers.
- Use SEM/EDX when morphology, elemental composition, inorganic fillers, metal particles, pigments, or printed features are relevant.
- Report similarities, differences, limitations, and whether the data support authentic, non-authentic, tampered, substituted, or inconclusive interpretations.
Analytical capabilities commonly used for this work
| Technique or platform | Information produced | Why it matters |
|---|---|---|
| Optical and digital microscopy | Visual morphology, dimensions, surface features, color, layering, and sample-selection context. | Documents the evidence before destructive testing and helps select specific particles or regions for analysis. |
| Raman microscopy and chemical mapping | Molecular fingerprints and spatial distribution of many APIs, excipients, pigments, polymers, and crystalline components. | Useful for suspect-versus-authentic comparisons, coating/core analysis, layered systems, and localized unknowns. |
| FTIR and IR microspectroscopy | Polymer, organic, excipient, adhesive, fiber, film, and residue identification. | Often strong for particles, fibers, packaging materials, cap liners, label adhesives, and contact-material comparisons. |
| SEM/EDX | High-resolution morphology plus elemental composition and elemental maps. | Critical for inorganic particles, fillers, talc-related signals, metals, corrosion, pigments, and source comparisons. |
| LC/MS, GC/MS, chromatography, NMR, or ICP-MS | Targeted or investigative molecular, volatile/semi-volatile, structural, or trace-element information. | Added when direct microanalysis is not enough or when confirmation, quantitation, or structural assignment is required. |
Related contaminant and impurity services
Root Cause Investigations
Compare good and suspect lots, process materials, packaging, and suspected sources to support deviation and CAPA decisions.
Trace Level Analysis
Use sensitive and spatially resolved workflows for low-level components, particles, residues, and elemental signals.
Counterfeit Analysis
Compare suspect products, packaging, labels, seals, and dosage forms against authentic references.
Frequently Asked Questions about Counterfeit Analysis
Can Triclinic compare the unknown to suspected sources?
Yes. Comparisons to retained lots, authentic lots, raw materials, packaging, process-contact materials, filters, cleaning agents, environmental samples, or supplier materials often make the interpretation stronger.
Can the result support a quality or manufacturing investigation?
Yes, when the samples, chain of custody, controls, and comparison materials are appropriate for the decision. The report should separate confirmed findings from plausible but unconfirmed source hypotheses.
What if the sample is very small or mixed?
Very small or mixed materials may require microscopy-guided sampling, multiple techniques, and careful language. Some results can be definitive; others are best reported as material class, component assignment, or evidence-consistent source comparison.
What reference materials improve a counterfeit comparison?
Authentic product, packaging, labels, seals, dosage forms, lot information, photographs, and supply-chain history improve the comparison. The investigation should document what is known, what is suspected, and which conclusions require direct reference matching.
Talk to a Triclinic Labs scientist
Send the material, current data, project objective, quality requirements, suspected sources, available comparison materials, and timeline. Triclinic will route the request to the right scientific or operational contact.