Quest Diagnostics Incorporated provides diagnostic testing and services in the United States and internationally. The company develops and delivers diagnostic information services, such as routine, non-routine and advanced clinical testing, anatomic pathology testing, and other diagnostic information services. It also provides diagnostic information services primarily under the Quest Diagnostics brand, as well as under the AmeriPath, Dermpath Diagnostics, ExamOne, and …
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Competitive advantage assessment
Key strengths
Superior Capital ReturnsCapital return quality is top-tier (score 0.85). High ROIC indicates the business is reinvesting at attractive rates.
Strong FCF GenerationFCF margin quality is top-tier vs peers (score 0.77). High FCF conversion confirms strong earnings quality.
Key risks
Below-Peer Gross MarginsGross margin quality lags peers (score 0.30). May indicate commodity-like product mix or distributor margin drag.
Elevated LeverageLeverage is elevated vs peers (score 0.25). High net debt/EBITDA limits the balance sheet's acquisition firepower.
The dashed ring is the peer median. Defense scores are percentile ranks
against peers, so 50 is roughly the typical company in this group.
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Quest Diagnostics Incorporated ranks #14 of 62
scored companies in Diagnostics & Research by moat score — the top 23%.
The widest moat in the group is IDEXX Laboratories, Inc. (IDXX)
at 78/100.
Moat scores for companies ranked near DGX in Diagnostics & Research
How DGX scores on the Medical Devices & Diagnostics defenses
Pricing Power & Consumable Moat
Score 47
· 25% of the moat score
In MedTech, pricing power is rarely about the machine — it is about what the machine consumes.
R&D Pipeline & Capital Returns
Score 82
· 20% of the moat score
Research spending is how a device company keeps its installed base current, but spending alone proves nothing.
FCF Quality & Cash Conversion
Score 62
· 20% of the moat score
MedTech companies grow by acquisition, and the resulting intangible amortisation depresses reported earnings without consuming any cash.
Commercial Execution
Score 65
· 15% of the moat score
Devices are sold into hospitals and labs through committees, tenders and long qualification cycles, which makes the sales organisation expensive and hard to replicate.
Capital Structure & Resilience
Score 53
· 12% of the moat score
Serial acquirers carry debt, and the question is whether the cash flows underneath it are dependable enough to service it through a downturn.
Growth Durability
Score 82
· 8% of the moat score
Growth durability separates an expanding installed base from a good product cycle.
What is Quest Diagnostics Incorporated's moat score?
Quest Diagnostics Incorporated (DGX) scores 63 out of 100 on the StatsAlpha Moat Map, which rates its competitive advantage as moderate. It ranks #14 of 62 scored companies in Diagnostics & Research, the top 23%. The score is a weighted composite of 6 competitive defenses, each measured against industry peers of 61 companies in Diagnostics & Research. Its strongest defense is R&D Pipeline & Capital Returns (82/100) and its weakest is Pricing Power & Consumable Moat (47/100).
How does Quest Diagnostics Incorporated compare with other Diagnostics & Research companies?
Quest Diagnostics Incorporated ranks #14 of 62 scored companies in Diagnostics & Research by moat score. The widest moat in Diagnostics & Research is IDEXX Laboratories, Inc. (IDXX) at 78/100. The companies ranked closest are IQVIA Holdings, Inc. (IQV) at 65 just above it and Exact Sciences Corporation (EXAS) at 62 just below it.
How is the moat score calculated?
Each company is scored with an industry-specific template — Medical Devices & Diagnostics in this case, chosen because the defenses that matter to a bank are not the ones that matter to a software company. Every defense combines several financial signals, and each signal is measured as a percentile against a peer group of 61 companies in Diagnostics & Research. The defenses are then weighted to produce the overall score out of 100.
Why is Quest Diagnostics Incorporated scored with the Medical Devices & Diagnostics template?
Medical device and diagnostics companies place an instrument once and then sell the consumables, reagents and service that instrument needs for the next decade. The economics are a razor-and-blade model wrapped in regulatory approval and clinician habit, so the MedTech template scores the durability of that installed base rather than the size of any single product launch.
Which competitive defenses are measured for Quest Diagnostics Incorporated?
The Medical Devices & Diagnostics template measures 6 defenses, and DGX scores: Pricing Power & Consumable Moat (47), R&D Pipeline & Capital Returns (82), FCF Quality & Cash Conversion (62), Commercial Execution (65), Capital Structure & Resilience (53), Growth Durability (82). Each is scored independently as a percentile against peers, so a company can be strong on one and weak on another — the overall score reflects how those defenses are weighted for this industry.
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