keyword

co2 normal

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

$ curl "https://api.seodata.dev/v1/keyword?q=co2+normal&country=us" +--------------+------------------+ | volume | 2,400 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-06-07 | +--------------+------------------+

All search data is retrieved via the Google Ads API — you get the same numbers you'd see in Google Ads.

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
co2 low	12,100	$0.02	20/20
carbon dioxide blood test	9,900	$0	20/20
co2 normal range	9,900	$0	20/20
normal co2 levels	9,900	$0	20/20
carbon dioxide in blood	8,100	$0.02	20/20
what is co2 in blood test	8,100	$0	20/20
co2 level	6,600	$0	20/20
low carbon dioxide blood test	6,600	$0	20/20
normal co2 levels in blood	2,400	$0	20/20
carbon dioxide normal range	1,900	$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://api.seodata.dev/v1/keyword?q=co2+normal&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt