Brandwave

Online blood testing services:Which are most popular?

In October 2026, Function Health was the most searched online blood testing service worldwide, accounting for 55% of all searches among the 12 services tracked by the Brandwave Brand Demand Index. When we checked with ChatGPT and Google AI Overviews, Labcorp was mentioned most often, in four of the five answers. Labcorp was recommended most often, coming first in four out of five responses.

Search and AI answers in October 2026
  1. Function HealthShare of searches 55%Mentioned in 2 of 5 AI answersPlace in AI recommendations 2nd
  2. EverlywellShare of searches 13.6%Mentioned in 1 of 5 AI answersPlace in AI recommendations 7th
  3. MedichecksShare of searches 9.1%Mentioned in 0 of 5 AI answersPlace in AI recommendations –
  4. LabcorpShare of searches 6.1%Mentioned in 4 of 5 AI answersPlace in AI recommendations 1st
  5. Marek HealthShare of searches 2.7%Mentioned in 0 of 5 AI answersPlace in AI recommendations –

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Top online blood testing services in ChatGPT and Google AI Overviews

In Brandwave's three ChatGPT questions and two Google AI Overviews, Labcorp was mentioned most often, in four of the five answers. Labcorp was recommended most often, coming first in four out of five answers. Function Health and SiPhox Health tied for second. Medichecks, which ranked third in searches, was not mentioned at all.

Most recommended by AI

Brands get a higher ranking if they are mentioned earlier in the answers.

  1. Labcorp1st
  2. Function Health2nd
  3. SiPhox Health2nd
  4. Quest Diagnostics4th
  5. Ulta Lab Tests4th
  6. Superpower6th
  7. Everlywell7th
  8. LetsGetChecked8th
  9. Medichecks–
  10. Marek Health–
  11. Thriva–
  12. InsideTracker–

Mentioned by AI

Each dot is one answer, filled in when that answer mentions the brand.

  • Labcorp4 of 5Named in 2 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Function Health2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Quest Diagnostics2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Everlywell1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • LetsGetChecked1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Ulta Lab Tests1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • SiPhox Health1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Superpower1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Medichecks0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Marek Health0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Thriva0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • InsideTracker0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers

See every answer about online blood testing services

5 answers

Brands are shown in the order each answer named them. The survey took place in the United States on October 25, 2026.

How the Brand Demand Index is measured

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