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Pathology laboratory · London
A small lab outranking Randox, Boots and the NHS.
Salient Bio is an award-winning London laboratory doing blood and stool pathology, microbiome analysis and metagenomic sequencing. It was competing for the same Google results as Randox, Boots, the private hospital groups and NHS trusts.
Before and after
Microbiome analysis service UK83 → No.1
Stool testing lab UK100+ → No.1
Blood in stool test service100+ → No.1
Pathology services central London100+ → No.3
No.1
for four of its main search terms
83 to 1
for microbiome analysis service UK
11
terms moved from nowhere into the top fifteen
9
months of work
The problem
Outgunned on every term that mattered.
Salient is a small independent lab with genuinely specialist capability. The trouble with specialist capability is that the search results for it are owned by organisations whose marketing budgets are several orders of magnitude larger: Randox, Boots, the private hospital groups and the NHS.
Almost every term the lab wanted was sitting past position one hundred. Not fiftieth, not twentieth. Past a hundred, which means no amount of small improvements was going to make any difference. The site also had indexing problems, so parts of it were not reliably in Google at all.
What we did
Three things, in this order.
1
Fixed the indexing first
There is no point optimising pages Google is not reliably reading. The indexing problems were repaired before anything else, and that alone put parts of the site into the results for the first time.
2
Built the pillar pages
Proper, deep pages for each service area with the supporting content around them, so the site read as a specialist rather than as a brochure.
3
Earned the authority
Guest posting and link building, citations, a YouTube channel used for content and for links, and a properly built Google Business Profile. Competing with Boots on authority takes authority.
The results
Nine months of work.
Positions are the highest reached on Google, measured in April 2025 against the May 2024 starting point. Keyword difficulty is from Semrush.
No.1
for microbiome analysis service UK, up from position 83.
No.1
for stool testing lab UK, blood in stool test service and blood pathology services central London, all from past position 100.
Top 3
for pathology services central London and for stool testing lab.
Eleven terms
moved from past position 100 into the top fifteen, against national competitors with national budgets.
The numbers
Every term we tracked.
Keyword difficulty is the Semrush figure, where a higher number means a harder term.
| Search term | Difficulty | May 2024 | Apr 2025 |
|---|---|---|---|
| Microbiome analysis service UK | 20 | 83 | 1 |
| Stool testing lab UK | 16 | 100+ | 1 |
| Blood in stool test service | 33 | 100+ | 1 |
| Blood pathology services central London | 30 | 100+ | 1 |
| Pathology services central London | 30 | 100+ | 3 |
| Stool testing lab | 25 | 100+ | 3 |
| Microbiome analysis service | 8 | 100+ | 4 |
| Blood in stool test lab UK | 40 | 100+ | 5 |
| Stool FIT test service | 10 | 100+ | 11 |
| Vaginal microbiome testing | 13 | 100+ | 13 |
| Pathology services London | 20 | 100+ | 14 |
Worth saying
Why this one is here, and it is not a clinic.
Salient is a laboratory rather than a clinic, and we do not take on work outside healthcare and wellness. It is on this page because it answers the question clinic owners ask us most often, which is whether a small independent business can really outrank the big names. It can, on the specific terms that matter to it.
What it does not show is anything about bookings or revenue. This was a rankings engagement and rankings are what we measured. A laboratory’s commercial cycle is nothing like a clinic’s, so we would not draw a line from these numbers to what a clinic should expect.
More clinics, more numbers
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