Paroxysmal Nocturnal Hemoglobinuria Quiz

Clarify possible PNH-related symptoms, clot warning signs, and blood test history in about 10 minutes. Free and no sign-up, it helps you prepare a focused conversation with your clinician.
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Questions1510 minutes
Hi! My name is Freudly, i am an AI therapist, I will give you an interpretation of the test after you complete it.
08:30
July 22, 2026
July 22, 2026
Material has been updated
66 views
6 completions
13 likes
Verified by Daniel Hall
Psychologist with 25 years of experience
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Scale Explorer

How the Scales are Structured

example score
5/15
Blood Count and PNH Testing Context (BCaPTC)
This scale summarizes reported blood-count findings and prior PNH-related testing context that may be relevant to discuss with a clinician.
No known indicators
Context to review
Prompt follow-up warranted
0NaNNo known indicators1NaNContext to review3NaNPrompt follow-up warranted
A score of 5 falls in the “Prompt follow-up warranted” range, indicating you selected multiple items suggesting prior blood-count or testing context that may merit timely clinical review.
example score
6/15
Clot and Emergency Warning Signs (CaEWS)
Summarizes endorsement of clot-related and emergency warning-sign patterns that may warrant urgent clinical attention.
No indicators endorsed
Medical review appropriate
Prompt action warranted
0NaNNo indicators endorsed1NaNMedical review appropriate3NaNPrompt action warranted
A score of 6 falls in the “Prompt action warranted” range, indicating multiple endorsed warning signs where any single concerning experience is important regardless of the total.
example score
10/15
Hemolysis and Anemia-Related Changes (HaARC)
This scale summarizes self-reported changes that can be consistent with hemolysis and anemia-related effects (e.g., fatigue, dark urine, low hemoglobin history).
No indicators endorsed
Worth discussing
Prompt action warranted
0NaNNo indicators endorsed1NaNWorth discussing3NaNPrompt action warranted
A score of 10 falls in the “Prompt action warranted” range, indicating multiple hemolysis/anemia-related changes were endorsed and may be important to discuss promptly in a clinical context.
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DATA-BASED USER COHORTS

Who Usually Takes This Test?

Unexplained anemia symptoms
41%OF USERS
People with ongoing fatigue, pale skin, shortness of breath, or dark urine who want to see whether their symptom pattern could be worth discussing with a clinician.
Clot concern after warning signs
34%OF USERS
People who have had a blood clot, unusual abdominal or chest pain episodes, or other clot warning signs and want to organize what happened before talking to a healthcare professional.
Abnormal blood test history
25%OF USERS
People with persistent abnormal CBC results like low hemoglobin, low platelets, or low white cells who want to gather details to bring to a medical appointment.
BASED ON AGGREGATED, ANONYMIZED DATA FROM TENS OF THOUSANDS OF FREUDLY USERS.
Benchmarking

See How You Compare

Once you complete the test, your results are compared with real-world data from people in your country.
Below is a preview of how scores are typically distributed across each scale.
Blood Count and PNH Testing Context (BCaPTC)
Average
6.9
Normal range
4.29.5
min.
0
max.
15
Majority
This curve shows how scores are typically distributed.
Once you complete the test, your result will appear on the scale so you can see how you compare.
Clot and Emergency Warning Signs (CaEWS)
Average
6.4
Normal range
3.88.9
min.
0
max.
15
Majority
This curve shows how scores are typically distributed.
Once you complete the test, your result will appear on the scale so you can see how you compare.
Hemolysis and Anemia-Related Changes (HaAC)
Average
9.8
Normal range
7.312.3
min.
0
max.
15
Majority
This curve shows how scores are typically distributed.
Once you complete the test, your result will appear on the scale so you can see how you compare.
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CLEAR ANSWERS TO COMMON QUESTIONS

Frequently Asked Questions

What is the purpose of this quiz?
It helps organize symptoms, possible clot warning signs, and prior blood-test history that may be relevant to discuss with a clinician. It does not diagnose or rule out any condition.
How long does it take, and how many questions are included?
Estimated completion time is about 10 minutes. The quiz includes 15 questions.
Can results confirm or exclude paroxysmal nocturnal hemoglobinuria?
No; many listed experiences can have other causes, and confirmation requires medical evaluation and specialized blood testing. Results should be used as a discussion aid only.
Which symptoms require emergency care rather than completing the quiz?
Seek emergency help for sudden chest pain, severe trouble breathing, coughing blood, fainting, stroke-like symptoms, or sudden painful limb swelling. Do not delay urgent care to finish the quiz.
How should answers be selected if details are unclear or symptoms vary over time?
Use the best available information from recent experiences and any lab reports. If unsure, select the closest option or indicate uncertainty when available.
WHAT THE TEST MEASURES
About This Assessment

Paroxysmal Nocturnal Hemoglobinuria Quiz - Symptoms and Signs

This free, no-sign-up PNH self-check helps you organize symptoms, clot warning signs, and blood-test history that may be worth discussing with a clinician. It cannot diagnose or rule out paroxysmal nocturnal hemoglobinuria; many listed experiences have other causes, and PNH requires medical evaluation and specialized blood testing. Seek emergency help now for sudden chest pain, severe trouble breathing, coughing blood, fainting, stroke-like symptoms, or sudden painful limb swelling.

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