Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
further investigation needed
Grammar usage guide and real-world examplesUSAGE SUMMARY
"further investigation needed" is correct and usable in written English.
You can use it when you are suggesting that a topic should be studied more closely or that additional research is necessary. For example, "The strange behavior of the stock market indicates that further investigation is needed."
✓ Grammatically correct
Science
Alternative expressions(20)
additional inquiry required
more research is necessary
deeper analysis is warranted
the matter requires more investigation
further inquiry is warranted
a more thorough examination is necessary
further investigation indicated
further investigation warranted
further investigation required
further investigation additional
subsequent investigation needed
further investigation requires
further investigation needs
further investigation need
further investigation identified
further investigation requiring
further investigations needed
further investigation must
further investigation necessary
further investigations necessary
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
2 human-written examples
Whether the phenomenon of major effector genes is a common hallmark of insect AMPs or not, further investigation needed to be done will be helpful in understanding the evolution of insect immune system.
Science
While the nature of the test performed by Hashemi et al. was meant to determine the mechanical benefits of augmenting screws with granular CaP particles immediately following surgery, it was suggested that further investigation needed to be performed in an in vivo environment to fully understand the potential of particulate CaP augmentation in a clinical setting.
Human-verified similar examples from authoritative sources
Similar Expressions
58 human-written examples
Further investigation needs to be done to improve the MFC overall performance.
Therefore further investigation needs to be done – access new prospects for research.
Though further investigation needs to be done to clarify the MTP HTTPS overhead in detail.
Further investigation needs to be performed.
Science
Further investigation needs to be performed to confirm this hypothesis.
Science
Further investigation needs to be carried out to interpret the physiological meaning of gastric tonometry.
Science
Yet further investigation needs to be done to clarify the mechanism.
Science
However, further investigations needed to confirm these data.
Science
Further investigations need to be carried out for more realistic prediction by the mentioned model.
Expert writing Tips
Best practice
When using "further investigation needed", ensure the context clearly indicates what requires further examination. Specify the subject or area that needs more attention for clarity.
Common error
Avoid using "further investigation needed" as a generic conclusion. Always provide context or briefly mention why further investigation is necessary to add value to your statement.
Source & Trust
82%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "further investigation needed" functions as a call to action or a recommendation. It emphasizes the necessity of additional research or examination to gain a more complete understanding of a particular subject. Ludwig AI confirms its usability.
Frequent in
Science
65%
Formal & Business
15%
News & Media
10%
Less common in
Encyclopedias
5%
Wiki
3%
Reference
2%
Ludwig's WRAP-UP
In summary, "further investigation needed" is a grammatically correct and very common phrase used to express the necessity for additional research or examination. It is most frequently used in scientific and academic contexts, and its primary function is to highlight gaps in current knowledge and motivate further inquiry. Ludwig AI indicates its usability in written English and many examples confirm this conclusion. When using this phrase, it is important to specify the subject or area requiring more attention for clarity. Alternatives include "additional inquiry required" and "more research is necessary", depending on the context and desired nuance.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
the matter requires more investigation
It specifies that the "matter" is the subject of further investigation.
additional inquiry required
This alternative uses more formal terms than the original phrase, emphasizing the necessity of the inquiry.
further inquiry is warranted
It replaces "investigation" with "inquiry", suggesting the need for further questioning or examination.
more research is necessary
This option uses simpler language, focusing on the need for more research.
deeper analysis is warranted
This phrase indicates that a more thorough analysis is justified based on current findings.
a more thorough examination is necessary
It highlights the depth of examination that is required.
it requires further study
This alternative shifts the focus to the subject needing further study, rather than the action itself.
additional scrutiny is required
This alternative suggests a need for careful and critical examination.
more exploration is needed
This option emphasizes the exploratory aspect of the investigation.
in-depth study is required
This phrase indicates that a detailed and comprehensive study is needed.
FAQs
How can I use "further investigation needed" in a sentence?
Use "further investigation needed" to express the necessity for more research or examination on a particular topic. For example, "The initial findings are promising, but "further investigation needed" to confirm these results".
What are some alternatives to "further investigation needed"?
Alternatives include phrases like "additional inquiry required", "more research is necessary", or "deeper analysis is warranted", depending on the specific context and nuance you want to convey.
Is "further investigation needed" formal or informal?
"Further investigation needed" is generally considered suitable for both formal and informal contexts. However, it is most commonly used in scientific, academic, and professional writing.
What is the difference between "further investigation needed" and "further investigations are needed"?
While both phrases are grammatically correct and express the same basic idea, "further investigation needed" is often used as a concise statement, whereas "further investigations are needed" is more suitable for longer, more descriptive sentences.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
82%
Authority and reliability
4.1/5
Expert rating
Real-world application tested