Direct answer
Testing text for AI generation means running it through a detector that returns a percentage of qualifying prose flagged as AI-written, then reading that percentage alongside sentence-level highlights. The most widely used check is the Turnitin AI writing indicator, which reports an overall score and marks the specific sentences it considers machine-generated [1]. A result is a signal for review, not a verdict: Turnitin itself describes the indicator as a prompt for academic judgment rather than proof of misconduct [1].
How Do You Test A Piece Of Writing For AI Generation Before You Submit It?
The practical route is a pre-submission check on the exact file you plan to hand in. Turnitin only runs AI detection on documents above roughly 300 words, so short excerpts will not return a meaningful indicator [2]. Upload the same .docx or .pdf you intend to submit, because formatting, headings, and reference lists all affect how the detector segments your prose [2].
When the report comes back, read two things at once: the overall AI percentage and the sentence-level breakdown. The percentage reflects only the share of qualifying text that the model flagged, not the whole document, so a 30% score on a 4,000-word essay does not mean a third of your work is compromised [2]. The sentence view is more useful for revision because it shows exactly which passages triggered the flag.
The most reliable test is the one your institution will actually use. Turnitin's report is the same artifact instructors see in their learning management system, which means a preview result and a final result are directly comparable [2]. Checking against a different tool tells you how that tool behaves, not how your marker's system will behave.
What Does An AI Detection Score Actually Mean, And Why Do Some Results Show An Asterisk Instead Of A Number?
An AI detection score is a percentage of qualifying prose that the model classifies as AI-generated — it is not a probability that you cheated, and it is not a judgment about your intent [3]. This distinction matters because students often read a number as an accusation, when the report is designed as a measurement of text, not of character [3].
The asterisk is the part most people misread. When Turnitin's AI detection falls below its 20% confidence threshold, the report displays *% instead of an exact figure, signalling a low-confidence result rather than a confirmed finding [3]. Low-confidence scores are explicitly not treated as evidence of misconduct, and they are more common on highly formulaic writing — lab reports, standard essay scaffolding, heavily templated introductions [3].
Context also shapes the number. Text that has been paraphrased repeatedly, translated, or run through a grammar tool can shift how the detector reads it, which is why a single score should never be read in isolation from your own drafting history [3]. Treat the figure as one input among several, alongside your notes, drafts, and version history.
What Should You Do If Your Draft Is Flagged As AI-Generated?
First, do not panic and do not delete anything. Turnitin and academic integrity teams consistently frame AI flags as the opening of a conversation rather than the closing of a case [4]. Your drafts, notes, and revision history are the strongest evidence of your own process, so preserve them before you start editing [4].
Second, revise the flagged passages in your own voice. The recommended response is not to disguise the text but to rewrite it so it reflects your reasoning, your examples, and your sentence rhythm [4]. If you used an AI tool for brainstorming or outlining, saying so plainly is usually a stronger position than silence.
Third, check your own institution's policy, because rules on AI assistance vary widely between departments and universities [4]. Some permit AI for editing and idea generation with disclosure; others restrict it entirely. Knowing which category your work falls into determines whether you are revising for clarity or revising for compliance [4].
If you would rather see the exact report your marker will open — the AI indicator, the sentence flags, and the similarity summary on one page — turnitin0 runs a non-repository check on your draft and returns both PDFs in under 15 minutes, so you can revise against real data instead of guessing.
※ Turnitin0.com - Actual Turnitin AI Report Cover, Score, Flag And Similarity Summary
FAQ
Is testing my draft for AI generation allowed?
Checking your own work before submission is a revision step, not a shortcut, and Turnitin's guidance treats the indicator as a support for academic judgment [1]. Many universities permit pre-submission checking; confirm your own policy first [4].
Why did my AI score show an asterisk instead of a number?
An asterisk appears when the result falls below Turnitin's 20% confidence threshold, which marks a low-confidence signal rather than a confirmed finding [3]. Those results are not treated as evidence of misconduct [3].
Can a fully human-written essay be flagged as AI?
Yes. Highly formulaic or heavily edited prose can produce a low-confidence flag, which is why the score should be read alongside sentence-level highlights and your drafting history [3].
Does a high AI score mean I will be reported for misconduct?
Not automatically. Institutions are advised to treat flags as the start of a conversation, and your drafts and notes are the evidence that supports your process [4].
What is the minimum length for an AI detection check?
Turnitin runs AI detection only on documents above roughly 300 words, so very short excerpts will not return a meaningful indicator [2].