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
upon testing with
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "upon testing with" is correct and usable in written English.
It can be used when discussing the results or findings from a test or experiment involving a specific method or tool. Example: "Upon testing with the new software, we found significant improvements in processing speed."
✓ Grammatically correct
Science
Alternative expressions(2)
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
4 human-written examples
No substantial substitutional saturation was found in the COI and 16S datasets upon testing with DAMBE version 5.2.73 [ 42].
Science
Upon testing with an independent dataset, this classifier discerned in situ and invasive melanomas from naevi with 100% sensitivity and 88% specificity, with an area under the curve for the receiver operating characteristic of 0·955.
Upon testing with 117 healthy subjects and 58 stone former, 5.6 μg/mL THP concentration (P < 0.05) was set as the cut-off point to distinguish stone patients from the healthy subjects.
Science
However, upon testing with undifferentiated GL15 cells, these effects were either not present (i.e. ATP-induced [Ca2+]i variation), or less marked (i.e. KCl-induced), or evident in a different way (i.e. L-glu-induced).
Science
Human-verified similar examples from authoritative sources
Similar Expressions
56 human-written examples
If the presence of an alternative diagnosis is to be used as justification for discontinuing SARS-specific isolation precautions, the alternative diagnoses should be based only upon tests with high positive predictive value, and the clinical illness should be fully explainable by the diagnosis.
Science
The initial concern that information from HPA regional laboratory reports would be too limited because it was based upon testing patients with either travel associated risk or who were contacts of other influenza cases was unfounded.
Science
Based upon permutation testing (with 1000 permutations), the p-value or probability of observing 10 or more overlapping CNVs in these cohorts by chance is 0.005 ( = 5/1000).
Science
Subjects in the group 'Nucleus Only' had fully effective infusions of muscimol (with ineffective nuclear infusions of CNQX) at the nuclear cannula, but failed to meet the criteria for effective cortical infusion, based upon Performance Testing with either muscimol, or CNQX, or both.
Science
The content, flow and face validity of the instrument was assessed through an iterative process in consultation with community-based experts and upon pilot testing with non-experts.
Science
Upon testing for concordance with the HWE principle, five studies were found to deviate from HWE and were excluded.
Science
Finally, too few in vitro teratology prescreens have been evaluated under multiple-laboratory conditions with common, agreed-upon test agents to draw firm conclusions regarding the merit and reproducibility of in vitro teratology prescreens.
Expert writing Tips
Best practice
When using "upon testing with", ensure the context clearly indicates what is being tested and with what method or tool. This phrase is most suitable for formal, scientific, or technical writing.
Common error
While grammatically correct, "upon testing with" can sound overly formal in casual conversation or informal writing. Opt for simpler alternatives like "after testing with" or "when tested with" for broader appeal.
Source & Trust
85%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "upon testing with" functions as a prepositional phrase introducing a condition or circumstance that leads to a particular result or observation. It modifies a verb or clause by specifying the context of an action or finding.
Frequent in
Science
100%
Less common in
News & Media
0%
Formal & Business
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, "upon testing with" is a grammatically sound phrase primarily utilized in scientific and technical writing to introduce the specific conditions or methodologies employed during testing. Ludwig highlights that its use is most appropriate in formal contexts, where precision and clarity are paramount. While there are alternative phrasings available, such as "after testing with" or "when tested with", the choice depends on the desired nuance and level of formality. Despite the alternatives, be aware of the potential overuse of this phrase in informal context as it may sound odd to the reader.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
after conducting tests with
Replaces "upon" with "after conducting", emphasizing the completion of the testing process.
following experimentation with
Substitutes "testing" with "experimentation", suggesting a more exploratory approach.
when assessed with
Changes "testing" to "assessed", focusing on evaluation rather than the act of testing.
through the use of tests with
Emphasizes the method of testing by specifying "through the use of tests".
by means of testing with
Similar to the previous one, but utilizes "by means of" to highlight the process.
based on analyses with
Shifts the focus to "analyses" derived from the testing, rather than the testing itself.
with the application of tests with
Highlights the practical application of the tests.
utilizing test methods involving
Rephrases to emphasize the test methods and their involvement.
subjected to trials with
Uses "trials" instead of "testing", implying a more rigorous evaluation.
after trials using
Simplified structure, emphasizes the use of certain trials.
FAQs
How can I rephrase "upon testing with" to sound less formal?
For less formal contexts, consider using phrases like "after testing with", "when tested with", or "using tests with".
What is the difference between "upon testing with" and "after testing with"?
"Upon testing with" implies immediacy or direct consequence, whereas "after testing with" simply indicates a sequence of events. The choice depends on the desired emphasis.
Is "upon testing with" suitable for academic writing?
Yes, "upon testing with" is generally acceptable for academic and scientific writing, as it conveys a sense of formality and precision appropriate for these contexts.
Can I use "upon testing with" interchangeably with "during testing with"?
While both are grammatically correct, "during testing with" suggests an action occurring concurrently with the testing process, whereas "upon testing with" emphasizes the result or consequence observed at the moment or shortly after testing.
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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
85%
Authority and reliability
4.1/5
Expert rating
Real-world application tested