Personalized Medicine & 3D Printing MCQs With Answer

Personalized Medicine & 3D Printing MCQs With Answer

This quiz collection is designed for M.Pharm students studying Novel Drug Delivery Systems (MIP 103T) to deepen understanding of personalized medicine and 3D printing applications in pharmaceutics. It covers fundamentals of pharmacogenomics, biomarker-guided dosing, regulatory considerations, and how additive manufacturing techniques (FDM, inkjet, SLS, binder jetting, extrusion) enable patient-specific dosage forms such as polypills, implants, and tailored release profiles. Questions emphasize material selection, process parameters, quality attributes, stability challenges, and translational barriers from lab to clinic. Use these MCQs to test conceptual knowledge and practical implications when designing individualized therapies using 3D printing technologies.

Q1. Which regulatory consideration is most important when translating a 3D‑printed personalized dosage form to clinical use?

• Cost of the 3D printer
• Evidence of consistent product quality and reproducibility
• Color options for patient preference
• Speed of the printing process

Correct Answer: Evidence of consistent product quality and reproducibility

Q2. In pharmacogenomics-guided personalized dosing, which biomarker type most directly informs enzyme activity affecting drug metabolism?

• Plasma protein binding coefficient
• Genetic polymorphism in CYP450 enzymes
• Electrolyte panel
• Body mass index

Correct Answer: Genetic polymorphism in CYP450 enzymes

Q3. Which 3D printing technique is most appropriate for fabricating high‑resolution, porous oral tablets with rapidly disintegrating properties and was used in the marketed product Spritam?

• Selective laser sintering (SLS)
• Fused deposition modeling (FDM)
• Binder jetting (powder bed printing)
• Inkjet droplet deposition

Correct Answer: Binder jetting (powder bed printing)

Q4. Which polymer property is critical when selecting a filament material for FDM printing of drug-loaded tablets to avoid thermal degradation of the API?

• Low glass transition or melting temperature compatible with API stability
• High hygroscopicity
• Strong ionic conductivity
• Opaque color

Correct Answer: Low glass transition or melting temperature compatible with API stability

Q5. For inkjet printing of oral films containing biologics, what is a primary formulation challenge?

• Ensuring electrically conductive ink
• Maintaining biological activity while achieving appropriate viscosity and surface tension
• Availability of colored dyes
• High melting point of the substrate

Correct Answer: Maintaining biological activity while achieving appropriate viscosity and surface tension

Q6. Which parameter primarily controls drug release kinetics from a 3D‑printed porous matrix tablet?

• Printer brand
• Pore geometry and interconnectivity
• Shape of the external packaging
• Color of the API powder

Correct Answer: Pore geometry and interconnectivity

Q7. What is an advantage of multi‑material 3D printing for personalized polypharmacy formulations?

• Ability to print multiple APIs with independent release profiles within one dosage form
• Reduced need for regulatory approval
• Guaranteed zero degradation of all APIs
• Unlimited printing speed regardless of complexity

Correct Answer: Ability to print multiple APIs with independent release profiles within one dosage form

Q8. Which analytical method is most suitable for assessing layer adhesion and internal structure of a 3D‑printed implant non‑destructively?

• Differential scanning calorimetry (DSC)
• Micro-computed tomography (micro-CT)
• High‑performance liquid chromatography (HPLC)
• UV–visible spectroscopy

Correct Answer: Micro-computed tomography (micro-CT)

Q9. When printing thermolabile APIs, which strategy best minimizes API degradation during FDM?

• Increasing filament print temperature
• Using a polymer with a lower melting point and reducing nozzle temperature
• Printing at a higher nozzle pressure
• Increasing infill density

Correct Answer: Using a polymer with a lower melting point and reducing nozzle temperature

Q10. Which quality attribute is most relevant for patient‑specific 3D‑printed implants used in load-bearing applications?

• Color uniformity
• Mechanical strength and fatigue resistance
• Rapid disintegration time
• High porosity for quick drug release

Correct Answer: Mechanical strength and fatigue resistance

Q11. What is a key challenge in regulatory oversight of point‑of‑care 3D printing in hospitals for personalized medicines?

• Deciding who manufactures and holds responsibility for product quality (hospital vs. device maker)
• Availability of color inks
• Cost of APIs
• Patient acceptance of printed shapes

Correct Answer: Deciding who manufactures and holds responsibility for product quality (hospital vs. device maker)

Q12. Which characteristic of a bioink is essential for extrusion‑based bioprinting of tissue‑integrated drug depots?

• High thermal conductivity
• Shear-thinning rheology and rapid gelation post-extrusion
• High electrical resistance
• Ability to sublimate under low pressure

Correct Answer: Shear-thinning rheology and rapid gelation post-extrusion

Q13. How does infill percentage affect a 3D‑printed tablet’s dissolution rate?

• Higher infill generally increases surface area and speeds dissolution
• Higher infill decreases tablet mass
• Higher infill typically reduces porosity and slows dissolution
• Infill percentage does not affect dissolution

Correct Answer: Higher infill typically reduces porosity and slows dissolution

Q14. Which approach allows precise temporal separation of two APIs from a single 3D‑printed polypill?

• Coating both APIs with identical immediate-release polymers
• Spatial separation using different polymer matrices with distinct degradation profiles
• Printing both APIs in powder form without matrix
• Mixing APIs homogeneously in one polymer

Correct Answer: Spatial separation using different polymer matrices with distinct degradation profiles

Q15. Which material property of powders is critical for successful selective laser sintering (SLS) in pharmaceutical printing?

• Low melting point with narrow particle size distribution and good flowability
• High electrical conductivity
• Strong magnetic susceptibility
• High optical transparency

Correct Answer: Low melting point with narrow particle size distribution and good flowability

Q16. In personalized medicine, therapeutic drug monitoring (TDM) combined with 3D printing enables which advantage?

• One‑size‑fits‑all dosing
• Rapid on‑demand adjustment of dose strength and regimen based on measured drug levels
• Elimination of all side effects
• Reduced need for any clinical follow-up

Correct Answer: Rapid on‑demand adjustment of dose strength and regimen based on measured drug levels

Q17. Which characterization technique helps determine whether API crystallinity changed during thermal 3D printing?

• X‑ray powder diffraction (XRPD)
• Gas chromatography
• pH titration
• Particle size by sieving only

Correct Answer: X‑ray powder diffraction (XRPD)

Q18. What is a principal limitation of scaling up 3D‑printed personalized dosage production for large populations?

• Excessive homogeneity of product
• Throughput and regulatory complexity for individualized batches
• Inability to create complex geometries
• Complete lack of available APIs

Correct Answer: Throughput and regulatory complexity for individualized batches

Q19. Which design parameter is manipulated to create a delayed‑release region within a single 3D‑printed tablet?

• Printing only one color
• Embedding a non‑degradable core with an erodible outer layer of specific polymer
• Reducing tablet weight to near zero
• Using a soluble filler for instant dissolution

Correct Answer: Embedding a non‑degradable core with an erodible outer layer of specific polymer

Q20. Which factor most strongly affects dose uniformity when producing low-dose APIs via powder‑based 3D printing?

• Humidity in the printing environment affecting powder flow and segregation
• Printer color calibration
• Ambient light intensity
• Operator’s handwriting

Correct Answer: Humidity in the printing environment affecting powder flow and segregation

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