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keyword

normal co2 levels

Monthly search volume and cost-per-click data for "normal co2 levels" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=normal+co2+levels&country=us" +--------------+------------------+ | volume | 9,900 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-05-26 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
carbon dioxide in blood low 22,200 $0 16/20
carbon dioxide low 12,100 $0 16/20
co2 low 12,100 $0.02 16/20
co2 normal range 9,900 $0 20/20
co2 level 6,600 $0 20/20
carbon dioxide levels 2,900 $0 18/20
normal co2 levels in blood 2,400 $0 20/20
co2 normal 2,400 $0 17/20
carbon dioxide normal range 1,900 $0 18/20
co2 normal levels 720 $0 20/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://app.seodata.dev/v1/keyword?q=normal+co2+levels&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 1,000/month

Full API spec: llms.txt