Stocks Comparison
Quest Diagnostics vs Guardant Health: revenue, profit, margins and growth compared
Quest Diagnostics brought in $11B of revenue in fiscal 2025, Guardant Health $982M in fiscal 2025. Revenue changed by +11.8% at Quest Diagnostics and +32.9% at Guardant Health on the year before, so Guardant Health grew faster. Quest Diagnostics kept 9.0% of its revenue as net profit, Guardant Health -42.4%. Free cash flow was $1.4B at Quest Diagnostics and -$233.1M at Guardant Health.
Side by side, latest fiscal year
| DGX | GH | |
|---|---|---|
| Fiscal year ended | FY2025 (December 31, 2025) | FY2025 (December 31, 2025) |
| Revenue | $11B | $982M |
| Revenue growth | +11.8% | +32.9% |
| Net income | $992M | -$416.3M |
| Net margin | 9.0% | -42.4% |
| Free cash flow | $1.4B | -$233.1M |
| Free cash flow margin | 12.3% | -23.7% |
| Earnings per share (diluted) | $8.75 | -$3.32 |
| Cash | $420M | $378.2M |
| Debt | $5.7B | $1.5B |
| Price to earnings | 27.0 | n/a |
| Market value | $26.1B | $23.8B |
| Dividend yield | n/a | n/a |
| Rank by revenue in sector | #43 of 523 · Health care | #146 of 523 · Health care |
Over the years
Questions about Quest Diagnostics and Guardant Health
Which is bigger by revenue, Quest Diagnostics or Guardant Health?
Quest Diagnostics is bigger by revenue: $11B in fiscal 2025, against $982M for Guardant Health in fiscal 2025.
Which keeps more of its revenue as profit, Quest Diagnostics or Guardant Health?
Quest Diagnostics had a net margin of 9.0% in fiscal 2025; Guardant Health had -42.4% in fiscal 2025.
Which grew revenue faster, Quest Diagnostics or Guardant Health?
In their latest fiscal years revenue changed by +11.8% at Quest Diagnostics and +32.9% at Guardant Health.
Where do these numbers come from?
From the annual reports each company files with the SEC (10-K, or 20-F and 40-F for foreign companies), read from their XBRL data. Margins and growth are simple arithmetic on those figures. Nothing here is a recommendation.