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labtestsonline.org.uk

https://labtestsonline.org.uk· First analyzed 16 May 2026· Updated 16 May 2026
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labtestsonline.org.uk
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Mobile

Sponsored

Hosting Provider

Cloudflare
cloudflare.com

IP Address

94.247.142.1

Site Location

🇬🇧 United Kingdomvia tld

Server Location

🇺🇸 Houston, United States

ASN

AS209242

Organization

Bit Breakfast Ltd

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

christian.ns.cloudflare.com.raquel.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
406 ms10%
Speed Index
528 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
220 KB
12 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
Infrastructure
Hosting
Cloudflare
CDN
Cloudflare

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

5 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

CDN

1
Cloudflare

SEO Analysis

B78/100
21
6
0
Meta Tags10/15
Content10/12
Headings8/8
Technical24/25
E-E-A-T2/7
Images4/7
Links4/5
URL5/5
Social5/5
Freshness0/4
Mobile3/4
Indexability3/3
L
labtestsonline.org.uklabtestsonline.org.uk

Lab Tests Online UK | Homepage

Helping you understand the what, why and how of patient laboratory testing

Title Length30 chars

Recommended: 50-60 chars (~185px / 580px)

Description Length74 chars

Recommended: 120-160 chars

Issues (0)

    6 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    3 URLs

    3 sub-sitemaps

    robots.txt

    12 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    28/100
    Needs Work
    6 12 1

    Sponsored

    AI & LLM Readiness

    F39/100
    Bot Access
    16/25
    Machine Read.
    7/25
    Schema Data
    6/25
    Citation
    10/25

    AI Bot Access

    11/14 accessible
    AI Search
    OAI-SearchBot
    PerplexityBot
    Claude-SearchBot
    Gemini-Deep-Research
    DuckAssistBot
    Training
    GPTBot
    ClaudeBot
    Google-Extended
    Meta-ExternalAgent
    Bytespiderinfo
    Amazonbot
    Applebot-Extended
    CCBotinfo
    Fetch
    ChatGPT-User

    Machine Readability

    llms.txt
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    Text ratio:2%
    Words:767
    Token eff.:Optimal

    Structured Data

    4 JSON-LD
    Person×1.3(min)WebSiteLocalBusiness×1.1(min)BreadcrumbList

    Citation Readiness

    Opening Summary178w
    Descriptive Headingsavg 2.4w
    Canonical URL
    Open Graph3/3
    Twitter Card3/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (12)
    AI readiness recommendation preview...
    Upgrade to view recommendations

    Sponsored

    Accessibility

    WCAG 2.1 Compliance

    Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.
    A+
    90/100
    17
    Passed
    1
    Critical
    0
    Warnings
    Images & Alt Text
    18/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    20/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    15/15
    Verifies form fields have labels, error messages are clear, and inputs are properly associated.
    Color & Contrast
    15/15
    Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.
    Keyboard & Focus
    15/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    7/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

    Carbon Footprint

    SWDM v4 · Eco-Score

    Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.
    72/100
    A+
    22 mg
    CO₂e / view
    219.8 KB
    Page Weight
    95%
    Cleaner Than
    New Visitor
    25 mg
    vs
    Returning (cached)
    13 mg
    Annual (10K/mo)
    2.7 kg
    Emission Segments
    Data Center
    1 mg
    Network
    7 mg
    Device
    15 mg
    Resource Breakdown
    JavaScript
    38.8 KB
    Images
    407 B
    CSS
    136.9 KB
    HTML
    43.7 KB
    Green Hosting Verified
    Cloudflare
    Provider Match
    3 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    C

    Security Score

    66%Fair
    Interactive

    HTTPS

    WAF

    37d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    ECDSA (secp256r1) (256 bit)

    Signature

    ECDSA with SHA-384

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2+H3

    Valid From

    24.03.2026

    Valid Until

    22.06.2026

    Subject Alternative Names (2)

    *.labtestsonline.org.uklabtestsonline.org.uk

    SHA-256 Fingerprint

    B9:AC:3B:4C:2C:45:5A:3D:15:4D:C7:60:8C:06:A7:73:E2:D5:D5:53...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    alt-svc
    h3=":443"; ma=86400
    cache-control
    🔴 No Cache(no-cache, no-store, must-revalidate)
    cf-cache-status
    DYNAMIC
    cf-ray🇮🇹 Milan
    9fc7aa4c8ad20e1d-MXP
    content-encoding
    📦 Gzip(gzip)
    content-type
    text/html; charset=UTF-8
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    45

    SPF
    DKIM
    DMARC

    MX Records (1)

    mail.labtestsonline.org.uk

    Domain Information

    labtestsonline.org.uk

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookiebot

    Cookie Consent Banner
    Cookiebot
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: Cookiebot
    Privacy policy page linked
    Legitimate interest basis mentioned

    Mobile Compatibility

    Viewport & Responsive Test

    Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.
    A
    81/100
    Mobile Friendly24 breakpoints
    Viewport Meta
    The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.
    Responsive Design
    Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.
    Touch Icons
    Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.
    Readable Font Size
    Base font size should be at least 16px on mobile to ensure text is readable without zooming.
    Relative Units
    Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.
    No H-Scroll Risk
    No elements wider than the viewport that would cause horizontal scrolling on mobile devices.
    Tap Targets OK
    Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.
    No Fixed Widths
    No elements with fixed pixel widths that could overflow on smaller screens and break the layout.
    Viewport
    width=device-width, initial-scale=1.0
    2 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    IBM Plex Sans

    WCAG AA
    87/100
    Readability
    /30
    26/30

    20px · LH 1.40

    Hierarchy
    /20
    19/20

    2.4x ratio · ✓ H1→H6

    WCAG
    /25
    22/25

    5.2:1 min contrast

    Performance
    /25
    20/25

    1 font · 2 req

    Heading Font

    IBM Plex Sans

    Sans48px

    Body Font

    IBM Plex Sans

    Sans20px

    Contrast Ratio

    5.2:1

    WCAG AA (≥4.5:1)

    Reading Comfort

    ~34 CPL

    Narrow lines
    48px
    h1
    36px
    h2
    20px
    h3
    20px
    p

    ✅ Excellent readability: 20px body text is ideal for all devices.

    ✅ Optimal line spacing: 1.40 ratio (ideal range 1.4–1.6).

    ✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.2:1).

    ✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

    ✅ Strong hierarchy: Headlines are 2.4x larger than body text.

    ✅ Lean font stack: 1 font families keeps load times fast.

    Buy on MyFontsFlesch 51

    Color Palette

    6 unique colors
    Light
    #ffffff
    Background· 40.599999999999994%
    #ddf3f1
    Background· 23.999999999999996%
    #016d79
    Primary· 20.699999999999996%
    #b4c8c9
    Secondary· 8%
    #0c5293
    Accent· 4%
    #4e848d
    Secondary· 2.7%

    Business & Marketing Stack

    3 Tools Detected

    Advanced

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    Privacy & Cookies

    1
    CookiebotMid-Market

    Cookie consent and privacy compliance tools

    2

    Categories

    3

    Total Tools

    0

    Enterprise

    1

    Mid-Market

    Assessment: Well-developed marketing technology stack

    Sponsored

    Scripts & Styles

    8 Resources

    7
    Scripts
    1
    Styles
    4
    Async
    3
    Defer

    Top Script Sources

    local(3)consent.cookiebot.com(2)googletagmanager.com(2)

    Website Identity

    Lab Tests Online UK

    Lab Tests Online UK

    LocalBusiness

    A collaboration between the Association for Laboratory Medicine, IBMS and Royal College of Pathologists

    enquiries@labmed.org.uk
    Location detected: 🇬🇧 United Kingdomvia tld
    en-GB

    Sponsored

    Last analyzed: 16 May 2026 at 04:33

    Historical Analysis & Change Tracking