Blood test norms for kids could end diagnostic delays

NCT ID NCT05323188

Completed Knowledge-focused Sponsor: Assistance Publique - Hôpitaux de Paris Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jun 26, 2026 · Updated 1 time

Summary

This completed study measured normal tryptase levels in 402 children aged 0-18 to help doctors better diagnose mast cell disorders like mastocytosis and MCAS. Researchers used leftover blood from routine tests in children undergoing surgery. Knowing these normal ranges could reduce years of misdiagnosis and improve care for affected children.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

What this could lead to

If successful, this could help doctors diagnose mast cell disorders in children more accurately and quickly using a simple blood test.

What could go wrong

This is an observational study that only establishes normal ranges, not a treatment trial. It may not directly improve patient outcomes.

Disclaimer Read more

This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Conditions

The condition(s) this trial relates to.

hereditary alpha tryptasemia syndrome mast cell activation syndrome mastocytosis

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

BASAL TRYPTASEMIA

Contacts and locations

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Locations

Hôpital Necker-Enfants Malades

Paris, 75015, France