Website review sema4.com
Genetic Testing for Rare Disease Diagnosis | GeneDx
Generated on April 13 2026 05:58 AM
Old data? UPDATE !
The score is 60/100
SEO Content
Title
Genetic Testing for Rare Disease Diagnosis | GeneDx
Length : 51
Perfect, your title contains between 10 and 70 characters.
Description
Genetic testing for rare and complex conditions. GeneDx delivers fast, actionable insights through advanced genomic technologies, helping providers, patients, and partners find answers sooner.
Length : 192
Ideally, your meta description should contain between 70 and 160 characters (spaces included). Use this free tool to calculate text length.
Keywords
Very bad. We haven't found meta keywords on your page. Use this free online meta tags generator to create keywords.
Og Meta Properties
Good, your page take advantage of Og Properties.
| Property | Content |
|---|---|
| type | website |
Headings
| H1 | H2 | H3 | H4 | H5 | H6 |
| 1 | 20 | 8 | 13 | 0 | 0 |
- [H1] Precise, fast, actionable diagnoses through advanced genetic testing
- [H2] 2.5 million tests and counting2
- [H2] Who we serve
- [H2] When every moment matters
- [H2] The GeneDx difference
- [H2] GeneDx Infinity™: The largest rare disease dataset
- [H2] Diagnosis is power
- [H2] Featured use cases
- [H2] 230 new genes linked to autism
- [H2] Early detection means early action for NICU families
- [H2] From infant seizures to a genetic diagnosis
- [H2] Genetic insights provide clarity for adult epilepsy
- [H2] Personalised care begins with genetic testing
- [H2] How exome and genome sequencing shape clinical care
- [H2] AAP recommends exome and genome sequencing for global developmental delay and intellectual disability
- [H2] Advancing neonatal care with rapid genome sequencing
- [H2] From a years-long odyssey to clarity in two weeks
- [H2] Recommended forfirst-line testing⁵
- [H2] Trusted by
- [H2] Ready to get started with GeneDx?
- [H2] Common questions
- [H3] Providers
- [H3] Patients & families
- [H3] Health systems
- [H3] Biopharma
- [H3] Precise
- [H3] Fast
- [H3] Actionable
- [H3] Join our newsletter
- [H4] Genomic sequencing
- [H4] Additional testing options
- [H4] Tests
- [H4] For specialties
- [H4] By indication
- [H4] Ordering
- [H4] Support & resources
- [H4] Programs
- [H4] Clinical guidelines
- [H4] Educational hub
- [H4] FAQs
- [H4] About
- [H4] Initiatives
Images
We found 28 images on this web page.
28 alt attributes are empty or missing. Add alternative text so that search engines can better understand the content of your images.
Text/HTML Ratio
Ratio : 0%
This page's ratio of text to HTML code is below 15 percent, this means that your website probably needs more text content.
Flash
Perfect, no Flash content has been detected on this page.
Iframe
Too Bad, you have Iframes on the web pages, this mean that content in an Iframe cannot be indexed.
SEO Links
URL Rewrite
Good. Your links looks friendly!
Underscores in the URLs
Perfect! No underscores detected in your URLs.
In-page links
We found a total of 12 links including 0 link(s) to files
| Anchor | Type | Juice |
|---|---|---|
| whole exome sequencing | External | Passing Juice |
| whole genome sequencing | External | Passing Juice |
| whole exome sequencing | Internal | Passing Juice |
| whole genome sequencing | Internal | Passing Juice |
| Financial Assistance Program | External | Passing Juice |
| Learn more | Internal | Passing Juice |
| genomic sequencing | External | Passing Juice |
| Learn more | Internal | Passing Juice |
| Patient page | External | Passing Juice |
| How to Order page | External | Passing Juice |
| advocacy page | External | Passing Juice |
| here | External | Passing Juice |
SEO Keywords
Keywords Cloud
testing how genetic sequencing clinical genome genedx patients more rare
Keywords Consistency
| Keyword | Content | Title | Keywords | Description | Headings |
|---|---|---|---|---|---|
| genetic | 42 |  |
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| testing | 42 | |
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| genedx | 24 | |
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| sequencing | 18 | |
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| how | 15 | |
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Usability
Url
Domain : sema4.com
Length : 9
Favicon
Great, your website has a favicon.
Printability
We could not find a Print-Friendly CSS.
Language
Good. Your declared language is en.
Dublin Core
This page does not take advantage of Dublin Core.
Document
Doctype
HTML 5
Encoding
Perfect. Your declared charset is UTF-8.
W3C Validity
Errors : 0
Warnings : 0
Email Privacy
Great no email address has been found in plain text!
Deprecated HTML
Great! We haven't found deprecated HTML tags in your HTML.
Speed Tips
|
Excellent, your website doesn't use nested tables. |
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Too bad, your website is using inline styles. |
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Great, your website has few CSS files. |
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Too bad, your website has too many JS files (more than 6). |
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Perfect, your website takes advantage of gzip. |
Mobile
Mobile Optimization
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Apple Icon |
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Meta Viewport Tag |
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Flash content |
Optimization
XML Sitemap
Great, your website has an XML sitemap.
| https://www.genedx.com/ |
Robots.txt
https://sema4.com/robots.txt
Great, your website has a robots.txt file.
Analytics
Missing
We didn't detect an analytics tool installed on this website.
Web analytics let you measure visitor activity on your website. You should have at least one analytics tool installed, but It can also be good to install a second in order to cross-check the data.
PageSpeed Insights
Device
Categories
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