In 2024, Quest Diagnostics completed a corporate carbon footprint assessment and publicly disclosed its greenhouse gas (GHG) emissions according to the GHG Protocol, covering Scope 1 (direct emissions from owned or controlled sources), Scope 2 (indirect emissions from purchased energy) and Scope 3 (indirect emissions across the value chain).
Quest Diagnostics has also provided a category-level breakdown for 6 out of 15 Scope 3 emissions categories, offering greater transparency into its value chain emissions.
| Metric (tCO2e) | 2024 | 2023 | 2022 | 2021-2019 |
|---|---|---|---|---|
Total Scope 1 | 111,724a | N/A | N/A | |
Total Scope 2 | ||||
Market-Based | 72,820a | N/A | N/A | |
Location-Based | 82,977a | N/A | N/A | |
Total Scope 3 | 567,329a | N/A | N/A | |
Total Scope 1 Revenue Intensity (tCO2e/$M) | 11.3173a | N/A | N/A |
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In 2024, the total operational greenhouse gas (GHG) emissions of Quest Diagnostics amounted to 194,701 metric tons of CO2 equivalent. This figure includes both direct emissions from owned or controlled sources (Scope 1) and indirect emissions from purchased energy (Scope 2).a
Compared to 2021, the total operational greenhouse gas (GHG) emissions of Quest Diagnostics decreased by 43.59%, showing that the company has made progress in taking action to reduce the climate impact of its operations.ab
In 2024, the total Scope 1 emissions of Quest Diagnostics were 111,724 metric tons of CO₂ equivalent (tCO₂e).a
Compared to the previous year (2021), Quest Diagnostics's Scope 1 emissions decreased by 53.24%, highlighting the company's efforts to lower direct emissions from assets it owns or controls.ab
In 2024, Quest Diagnostics reported Scope 2 greenhouse gas (GHG) emissions of 72,820 tCO₂e using the market-based method and 82,977 tCO₂e using the location-based method.a
Compared to the previous year (2021), Quest Diagnostics's Scope 2 emissions (Location-Based) fell by 21.9% in 2024, showing that the company has made progress in taking action to reduce the climate impact of its energy consumption.ab
In 2024, Quest Diagnostics reported its Scope 2 emissions using the market-based method and using the location-based method.a
In 2024, Quest Diagnostics reported 567,329 metric tons of CO₂ equivalent (tCO₂e) of Scope 3 greenhouse gas (GHG) emissions, representing indirect emissions across its upstream and downstream value chain.a
The 2024 disclosure of Quest Diagnostics includes a breakdown across 6 of the 15 Scope 3 categories defined by the GHG Protocol, matching the level of disclosure in 2021, demonstrating consistent Scope 3 emissions reporting coverage year over year.a
In 2024, Quest Diagnostics reported total Scope 3 emissions of 567,329 metric tons of CO₂ equivalent (tCO₂e).a
Approximately 100% of these emissions originated from upstream activities such as purchased goods and capital goods, while 0% came from downstream activities like product use, distribution, and end-of-life treatment.a
Compared to the previous year (2021), Quest Diagnostics's Scope 3 emissions decreased by 97.71%, highlighting the company's efforts to lower indirect emissions from its value chain.ab
In 2024, Quest Diagnostics reported emissions for 6 out of the 15 Scope 3 categories defined by the GHG Protocol.a
This partial disclosure allows for some insight into the company's indirect impacts.
In 2024, the largest contributors to Quest Diagnostics's Scope 3 emissions were:a
In 2024, Quest Diagnostics reported Scope 1 greenhouse gas (GHG) emissions of 111,724 tCO₂e and total revenues of USD 9,872 millions. This translates into an emissions intensity of 11.32 tCO₂e per millions USD.a
In 2024, Quest Diagnostics reported a Scope 1 emissions intensity of 11.32 tCO₂e per millions USD. Compared to the peer group median of 4.56, this places the company above its industry benchmark, indicating it is less carbon-efficient than most competitors.a
In 2024, Quest Diagnostics ranked 21 out of 24 companies in its industry peer group, based on Scope 1 emissions intensity (measured in tCO₂e per millions USD).a
This places Quest Diagnostics among the least efficient performers, with one of the highest emissions intensities in its sector.a
In 2024, Quest Diagnostics reported a total carbon footprint of 762,030 metric tons of CO₂ equivalent (tCO₂e) across Scope 1, Scope 2, and Scope 3 emissions. This represents a 96.97% decrease compared to 2021, indicating progress in reducing its overall greenhouse gas output.ab
The largest contributor to Quest Diagnostics's total carbon footprint was Scope 3 emissions, accounting for 74.45% of the company's total carbon footprint, followed by Scope 1 emissions at 14.66%.a