Quest Diagnostics Incorporated, a leading provider in the diagnostic testing industry, is headquartered in the United States. Founded in 1967, the company has established itself as a pivotal player in laboratory services, offering a comprehensive range of diagnostic information services that include clinical laboratory testing, anatomic pathology, and genetic testing. With a strong operational presence across North America, Quest Diagnostics is renowned for its commitment to innovation and quality, providing unique solutions that enhance patient care. The company has achieved significant milestones, including advancements in molecular diagnostics and a robust network of patient service centres. Recognised for its market leadership, Quest Diagnostics continues to set the standard in the healthcare sector, delivering reliable and accurate testing services that empower healthcare providers and patients alike.
How does Quest Diagnostics's carbon action stack up? DitchCarbon scores companies based on their carbon action and commitment to reducing emissions. Read about our methodology to learn more.
Mean score of companies in the Medical Device Manufacturing industry. Comparing a company's score to the industry average can give you a sense of how well the company is doing compared to its peers.
Quest Diagnostics's score of 52 is higher than 71% of the industry. This can give you a sense of how well the company is doing compared to its peers.
In 2023, Quest Diagnostics reported total carbon emissions of approximately 831,068,000 kg CO2e, encompassing Scope 1, Scope 2, and Scope 3 emissions. The breakdown includes Scope 1 emissions of approximately 113,925,000 kg CO2e, Scope 2 emissions of approximately 77,514,000 kg CO2e, and Scope 3 emissions of approximately 631,003,000 kg CO2e. The company has set ambitious reduction targets, aiming to decrease its Scope 1 and Scope 2 emissions by 30% from 2021 levels by the year 2030. This commitment reflects a proactive approach to mitigating climate impact and aligns with industry standards for sustainability. Quest Diagnostics's emissions data is not cascaded from any parent organisation, indicating that the figures are independently reported. The company continues to focus on enhancing its environmental responsibility through these commitments and initiatives.
Access structured emissions data, company-specific emission factors, and source documents
| 2015 | 2016 | 2017 | 2021 | 2022 | 2023 | |
|---|---|---|---|---|---|---|
| Scope 1 | 83,929,000 | 00,000,000 | - | 000,000,000 | 000,000,000 | 000,000,000 |
| Scope 2 | 145,724,000 | 000,000,000 | 000,000,000 | 000,000,000 | 00,000,000 | 00,000,000 |
| Scope 3 | 41,299,000 | 00,000,000 | 00,000,000 | - | 000,000,000 | 000,000,000 |
Quest Diagnostics's Scope 3 emissions, which decreased by 23% last year and increased significantly since 2015, demonstrating supply chain emissions tracking. Most of their carbon footprint comes from suppliers and value chain emissions, with Scope 3 emissions accounting for 77% of total emissions under the GHG Protocol, with "Purchased Goods and Services" being the largest emissions source at 54% of Scope 3 emissions.
Climate goals typically focus on 2030 interim targets and 2050 net-zero commitments, aligned with global frameworks like the Paris Agreement and Science Based Targets initiative (SBTi) to ensure alignment with global climate goals.
Quest Diagnostics has not publicly committed to specific 2030 or 2050 climate goals through the major frameworks we track. Companies often set interim 2030 targets and long-term 2050 net-zero goals to demonstrate measurable progress toward decarbonization.

