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Quest Diagnostics Business Analyst Interview Questions

The questions to prepare for a Quest Diagnostics Business Analyst interview. Questions from real interview reports rank first. Updated daily.

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1
ExecutionStart here. 4 questions · ~32 min
Reduce Patient Wait TimesMedium

Analyze patient flow to find bottlenecks and improve throughput while protecting care quality and operational stability.

process improvementthroughputbottlenecksQuest Diagnostics
Recover a Slipping ProjectMedium

Explain how you would diagnose and recover a project that is falling behind schedule without losing stakeholder trust.

Success CriteriaRoadmappingRisk AssessmentQuest Diagnostics
Designing Lab Results ReportingHard

Tests your ability to plan end-to-end reporting requirements, data flows, and delivery for lab result stakeholders.

Success CriteriaRoadmappingRisk AssessmentQuest Diagnostics
Integrating New Software PlatformsHard

Tests your ability to assess integration requirements, risks, and dependencies across healthcare systems.

Trade-offsRisk AssessmentScope ManagementQuest Diagnostics
2
Behavioral & Leadership12 questions · ~96 min
Handling Tough Stakeholder FeedbackEasy

Tests how you handle stakeholder feedback with professionalism, ownership, and clear communication under real business pressure.

Conflict ResolutionStakeholder ManagementCommunicationQuest Diagnostics
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3
More topics3 questions · ~24 min
Discuss Data Analysis Tooling ChoicesEasy

Explain how SQL fits with data analysis and visualization tools, and when to use each in an analytics workflow.

JoinsData WranglingAggregationsQuest Diagnostics
Using Metrics to Drive DecisionsEasy

Explain how you used a KPI and supporting metrics to diagnose a product issue and make a concrete product decision.

Funnel AnalysisKPIsLeading IndicatorsQuest Diagnostics
Measuring Diagnostic Tool PerformanceMedium

Tests your ability to define and analyze performance metrics for laboratory tools and translate results into actionable insights.

KPIsLeading IndicatorsDiagnosisQuest Diagnostics

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
7-Day Rolling Average with Window FunctionsMedium
Practice
Practice drill

Calculate daily and 7-day rolling operational downtime for the Siemens Healthineers SOMATOM CT product line.

Window FunctionsDate FunctionsRunning TotalsSiemens HealthineersCogniteRakuten Symphony
Your Data ProjectMedium
Practice
Practice drill

Use joins, aggregation, and a CTE to identify TikTok Shop sellers with at least two completed orders.

experienceJoinsData ManipulationTikTokTikTok Shop
Integration Methods You’ve UsedHard
Practice
Practice drill

Summarize documented integration methods, usage counts, selection contexts, and latest decision dates with a PostgreSQL query.

experienceJoinsdata managementSalesforce
The finish line: interview-readyComplete all 19 questions plus 3 hands-on drills to finish this plan.