testing has led to vs testing has lead to

The correct phrase is 'testing has led to.' 'Led' is the past tense of the verb 'lead,' while 'lead' is a noun referring to a heavy metal. Therefore, 'testing has led to' is the appropriate construction in this context.

Last updated: March 26, 2024 • 1340 views

This phrase is correct and commonly used in English.

"testing has led to"

This phrase is used to indicate the result or consequence of testing something.

Examples:

Testing has led to significant improvements in our product.
The research team found that testing has led to a better understanding of the issue.
The experiments have shown that testing has led to breakthrough discoveries.
The data reveals that testing has led to increased efficiency.
The analysis demonstrates that testing has led to positive outcomes.

Show examples from the web [+]

Those monitoring programmes should be reviewed in the light of the results of two years of intensified testing which have not led to the detection of any additional BSE case in ovine or caprine animals.
In the UK and the United States increasing concern over DU's health effects has led to the implementation of testing regimes for returning soldiers.
This generous arrangement has led to much public criticism.
In the UK and the United States increasing concern over DU's health effects has led to the implementation of testing regimes for returning soldiers.
This epidemic has led to a crisis of confidence among consumers which has led to a substantial drop in consumption.
It has led to a lot of pain.
...the taxation, which in turn has led to an investigation of corporate policy.
And so far, that search has led to an astounding new theory.
All your work has led to this.
The Kaminoans feel a virus corrupted the clone's inhibitor chip, which has led to this behavior.
Wealth inequality has led to a permanent state of social unrest.
My lifelong search has led to a single document - Redacted.
Reporting deadly news: a bizarre shooting spree in Maryland has led to a statewide manhunt.
Technical progress has led to more complex devices and production methods implying new conformity assessment challenges for notified bodies.
No case of overdose has been reported that has led to acute clinical manifestations.
It's preaching like yours that has led to this.
But the promise of neuroscience has led to some really high expectations and some overblown, unproven claims.
Nonetheless, the Directive has boosted public debate on anti-discrimination and has led to many important initiatives.
This uncertainty has led to considerable litigation and has increased the administrative burden.
Halving prices has led to panic buying at large chains of stores.

Alternatives:

testing has resulted in
testing has brought about
testing has caused
testing has produced
testing has triggered

This phrase is incorrect. 'Lead' is a noun, not the past tense of the verb 'lead.'

"testing has lead to"

Show examples from the web [+]

in order to safeguard against the unreliability of methods of testing which could lead to rejection decisions having considerable economic consequences;
Which is why we're testing for lead.
in order to take account of the unreliability of testing methods which could lead to rejection decisions having important economic consequences
Whereas differences in the apparatus used for reaction-to-fire testing may lead to differences in test results; whereas therefore, to ensure that test results are the same throughout the Community, it is necessary to define a single configuration of the SBI apparatus;
An immediate ban on animal testing may also lead laboratories to carry out their testing on people, who are so poor that they are forced to accept anything in order to survive.
SMEs have expressed deep dissatisfaction with internal market rules and this has lead to the new Services Directive.
This has lead to large amounts of 'ramassage' and even significant cancellations of appropriations.
It has lead to the free market and to victory over any economic theory.
The evidence in this case has lead to one dead end after another.
His zealotry has lead to the senseless death of Andres Quintana, and this office will use everything in its power to see him brought to justice.
This drying around the world has lead to a dramatic increase in fires.
The Commission stresses that the economic crisis has lead to sharp declines in passenger and freight transport demand, which has had a negative impact on airline companies.
Inadequate implementation of this exemption in national law has lead to difficulty in following-up the physical movement of the imported goods.
The lack of legislation at EU level has lead to diverging eligibility criteria and limits throughout the EU.
Over the last year and in many countries, this has lead to painful business decisions regarding the closure and restructuring of some shipyards.
The Committee also takes note of the fact that the information campaign has lead to an increase of the number of admissible complaints.
The single European market has created an integrated financial market, and this has lead to increased competition and the free movement of persons and capital in Europe.
Lastly, I share the view that the development of different networks according to national specifications has limited trade and has lead to inadequate cooperation and incompatible standards.
The unprecedented crisis faced by the Greek economy has lead to a 50 % fall in the turnover of places of entertainment and restaurants, according to data produced by their owners.
According to the Commission, over time this has lead to a transport imbalance resulting in increased congestion, particularly on the trans-European transport routes and in cities.

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testing has led to vs testing has lead to