PCL-5 is a 20-item past-month PTSD symptom check-in that keeps the standard 0 to 80 total, the common 31 to 33 cut-point window, and the DSM-5 cluster rule visible.

  • Answer each item based on how much it bothered you in the past month.
  • Your responses stay in this browser unless you choose to export the finished report.
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Score position gauge
Primary interpretation

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Cluster pattern radar
Cutoff context
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Cluster rule
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Higher and lower scored items
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Answer review
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Complete the checklist before exporting the response ledger.
Tags: Diagnostics, Psychology, Psychometrics
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Trauma symptoms often show up in more than one part of life at once. A person may avoid reminders, sleep poorly, feel on guard, lose interest in ordinary activities, or have unwanted memories that arrive without warning. Those experiences can be hard to summarize from memory, especially when some symptoms are intense but infrequent and others are lower-grade but constant.

The PTSD Checklist for DSM-5, commonly called PCL-5, gives that symptom picture a consistent 20-item structure. It is built around the DSM-5 posttraumatic stress disorder symptom groups: intrusion, avoidance, negative mood and cognition, and arousal or reactivity. The checklist does not decide whether a traumatic exposure meets Criterion A, whether symptoms have lasted long enough, or whether impairment is present, but it can organize the symptom side of the assessment.

Past-month frame
Responses should describe how much each symptom bothered the person during the past month, not over a lifetime or on one unusually difficult day.
Total score
The 20 item ratings are added into one 0 to 80 severity score.
Symptom pattern
Items rated Moderately or higher are counted inside the DSM-5 clusters to see whether the endorsed symptoms are spread across the required groups.
PCL-5 score window and DSM-5 symptom clusters A 0 to 80 PCL-5 score line with 31 and 33 cut points, followed by cluster checkpoints B, C, D, and E. PCL-5 screening view A total score gives the severity signal. Cluster counts show whether endorsed symptoms cover the DSM-5 groups. 0 31 33 80 Below common window 31 to 33 Probable-PTSD screening range B: 1+ C: 1+ D: 2+ E: 2+

The common 31 to 33 cut-point window is a screening landmark, not a diagnosis. A lower boundary catches more possible PTSD cases and can also produce more false positives. A higher boundary is more conservative and can miss people whose symptoms still deserve attention. The cluster rule adds pattern information, but it is not a substitute for a structured clinical interview.

PCL-5 scores are most useful when they start a careful conversation instead of ending one. Trauma history, current safety, substance use, medical causes, dissociation, functional impairment, culture, and legal or benefits context can all change what a score means. Severe distress, current danger, or thoughts of self-harm need immediate human support, regardless of the number on the checklist.

How to Use This Tool:

Answer all 20 PCL-5 items with the same past-month frame before reading the score, cluster checks, charts, or exported summary.

  1. Select Start Assessment and keep one stressful experience or trauma context in mind if that is how the checklist is being used.
  2. Choose one response for each item: Not at all, A little bit, Moderately, Quite a bit, or Extremely. These responses score 0 through 4.
  3. Use the progress bar and question navigator to find any unanswered item. The result stays hidden until all 20 items are answered.
    If the progress label is below 20/20, complete the missing item before using the Past-month brief or exports.
  4. Read the Past-month brief first. It shows the total score, the 31+ and 33+ cut-point badges, the Cluster rule status, and the leading cluster when one group stands out.
  5. Compare the Score position gauge, Cutoff context, and Cluster rule table. The gauge places the total on the 0 to 80 range, while the tables show how the total and cluster counts are being interpreted.
  6. Review Higher and lower scored items and Answer review before sharing. These sections show which symptoms carried the result and whether any important item was rated low or high.
  7. Copy the result link or export the brief only when it is appropriate to share sensitive symptom information.
    Routine scoring happens in the browser. Copied links, CSV files, chart downloads, and DOCX exports can still expose private answers.

Interpreting Results:

The total score is the strongest single screening signal. National Center for PTSD guidance describes 31 to 33 as a common probable-PTSD cut-point range, while also warning that the right cut point can differ by population and screening purpose. The cluster rule is useful pattern evidence, but total-score cut points generally have stronger reliability guidance than the cluster rule alone.

Result pattern How to read it What to verify
33+ reached and cluster rule met Strong screening evidence for a fuller PTSD assessment. Confirm trauma exposure, duration, impairment, safety concerns, and interview findings.
31+ reached but below 33+ The score is inside the lower edge of the common cut-point window. Decide whether the situation calls for a more sensitive or more conservative screen.
Cut point reached while cluster rule remains open The total symptom load is elevated, but the endorsed-item pattern is incomplete. Check which cluster is short and which specific items are highest.
Cluster rule met below 31 The DSM-5 item pattern is represented while the total stays below the common window. Treat the result as mixed evidence and review impairment, context, and repeat scores.
Below 31 and cluster rule open The checklist is below common PCL-5 screening landmarks. Do not use one low run as a rule-out if symptoms are persistent, worsening, or unsafe.

The leading cluster and radar chart explain the shape of the symptom burden. Arousal-heavy results point attention toward irritability, risk-taking, watchfulness, startle, concentration, or sleep. Intrusion-heavy results point toward unwanted memories, dreams, flashback-like moments, and reactions to reminders.

Repeat comparisons are strongest when every run uses the same PCL-5 version, the same past-month instructions, and a complete 20-item answer set. A score change is easier to trust when the highest-scored items and the cluster pattern move in a way that matches the person's lived course.

Technical Details:

PCL-5 scoring is additive. Each of the 20 PTSD symptom items receives an integer from 0 to 4, then the item scores are summed into a total symptom severity score from 0 to 80. The score is ordinal rather than a physical measurement, so a one-point difference should be read as a small change in reported symptom burden, not as a precise clinical unit.

The DSM-5 symptom clusters have different item counts. Intrusion has 5 items, avoidance has 2, negative mood and cognition has 7, and arousal or reactivity has 6. Raw cluster totals are therefore not directly comparable unless item count is considered. Average cluster scores on a 0 to 4 scale make the four groups easier to compare without changing the official total score.

Formula Core

The total score is the sum of all 20 item scores. For the cluster rule, an item is endorsed when it is rated 2 or higher.

Total score = ∑ i=1 20 qi endorsed item = item score ≥ 2 cluster average = cluster raw total cluster item count

For example, a completed checklist with item scores that sum to 32 produces a 32/80 total. That reaches the 31+ lower range and remains 1 point below the 33+ stricter range. If neither avoidance item is rated 2 or higher, the cluster rule remains open even though the total has entered the lower cut-point lane.

Score Construction

Component Construction Range or rule Interpretation role
Total score Sum of all 20 item scores 0 to 80 Main screening score and baseline for repeat comparisons.
Item endorsement Any item scored 2, 3, or 4 2+ Counts toward the DSM-5 cluster rule.
Cluster B, intrusion Items 1 to 5 At least 1 endorsed Unwanted memories, dreams, flashback-like moments, upset, and physical reactions to reminders.
Cluster C, avoidance Items 6 to 7 At least 1 endorsed Avoidance of inner reminders or outer reminders.
Cluster D, negative mood/cognition Items 8 to 14 At least 2 endorsed Memory gaps, beliefs, blame, emotions, interest, detachment, and limited positive feeling.
Cluster E, arousal/reactivity Items 15 to 20 At least 2 endorsed Irritability, risk-taking, hypervigilance, startle, concentration, and sleep.

Threshold Rules

Rule Boundary How it appears
Lower common cut point Total score is 31 or higher 31+ lower range reports reached or shows the gap below 31.
Stricter common cut point Total score is 33 or higher 33+ stricter range reports reached or shows the gap below 33.
Cluster rule B:1, C:1, D:2, and E:2 endorsed at 2+ Cluster rule reports met or open and shows each cluster count.
Leading cluster Highest average item score among the four clusters Leading cluster and the radar chart show which group is most elevated.

The score display avoids mild, moderate, and severe PCL-5 labels. National Center for PTSD guidance notes that empirically derived severity ranges are not established for PCL-5 totals, so interpretation stays with cut points, cluster counts, item scores, and repeated complete assessments.

Limitations, Privacy, and Responsible Use:

PCL-5 is screening and monitoring information. It can support provisional diagnostic discussion, but it cannot confirm PTSD, assess immediate safety, evaluate trauma exposure by itself, or replace a qualified clinical interview.

  • Use a result in the 31 to 33 range as a reason for fuller PTSD assessment, not as final proof.
  • Use item and cluster patterns to guide follow-up questions, not to replace trauma history, impairment review, or safety assessment.
  • Seek immediate crisis, emergency, or local professional support for current danger, severe distress, self-harm thoughts, or risk of harm to others.
  • Keep copied links, screenshots, CSV files, chart downloads, and DOCX exports private because they can contain sensitive symptom responses.

Worked Examples:

These cases show why the total score and the cluster pattern need to be read together.

Both cut points are reached

A completed checklist totals 38/80. The Past-month brief shows 31+ reached, 33+ reached, and Cluster rule met. If the counts are B 3/1, C 1/1, D 3/2, and E 4/2, the result is a strong screening signal for fuller PTSD assessment while still needing trauma exposure, duration, impairment, safety, and interview context.

Lower cut point reached with avoidance open

A total of 32/80 reaches the 31+ lower range and stays below the 33+ stricter range. If both avoidance items are rated 0 or 1, the total remains elevated but the Cluster rule stays open because Cluster C needs at least one item rated 2 or higher.

Cluster rule met below the common window

A total of 27/80 can still meet the Cluster rule if enough items reach 2+ across B, C, D, and E. Read that as mixed evidence: the endorsed symptom pattern is present, but the total stays below the common 31 to 33 cut-point window.

FAQ:

Does a PCL-5 score diagnose PTSD?

No. A PCL-5 result can support screening and provisional diagnostic discussion, but diagnosis requires trauma exposure context, symptom duration, impairment, safety review, clinical interview, and professional judgment.

Why show both 31+ and 33+?

The 31 to 33 range is commonly cited for probable PTSD screening. Showing both edges keeps the more sensitive lower boundary and the stricter boundary visible.

What counts as an endorsed item?

For the cluster rule, any item rated Moderately, Quite a bit, or Extremely counts as endorsed. Numerically, that means item score 2, 3, or 4.

Why are there no mild, moderate, or severe labels?

The result avoids those labels because empirically derived severity ranges are not established for PCL-5 totals. The page instead shows cut points, cluster counts, and item patterns.

Can I compare this score with an older PCL score?

Do not compare PCL-5 totals directly with older DSM-IV PCL totals. The item count and response scale changed, so repeat comparisons should use complete PCL-5 runs collected under the same instructions.

Why will the result not show after I answered most questions?

The result requires all 20 answers. If the progress label is below 20/20, use the question navigator to find and answer the missing item before reading the brief or exporting details.

Glossary:

PCL-5
The PTSD Checklist for DSM-5, a 20-item self-report PTSD symptom measure.
Criterion A
The DSM-5 trauma-exposure requirement that must be assessed separately from the symptom checklist.
Endorsed item
An item rated 2 or higher, meaning Moderately, Quite a bit, or Extremely.
Cluster rule
The DSM-5 endorsed-item pattern requiring B:1, C:1, D:2, and E:2 at 2 or higher.
Cut point
A total-score boundary used as a screening landmark.
Leading cluster
The symptom cluster with the highest average item score on a completed checklist.

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