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CompletedNCT01345617Updated Aug 29, 2018

A Study of Sweat Testing Using a Quantitative Patch

An observational study in Cystic Fibrosis, sponsored by Polychrome Medical, Inc.. Completed at 3 sites in United States. Open to participants aged 2 Days and older. Per ClinicalTrials.gov, last updated 2018-08-29.

Sponsored by Polychrome Medical, Inc. · Observational

Study type
Observational
Model
Case-control
Time perspective
Prospective
Enrollment
170
Ages
2 Days and older
Sex
All
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Study summary

The primary aim of the study is to determine if the CF Quantum Sweat Test provides sweat chloride results that are equivalent to the results from traditional sweat testing. The secondary aim of the study is to assess the quantity not sufficient rate of the CF Quantum Sweat Test compared to traditional sweat testing.

Read the detailed description

All 50 states and the District of Columbia are performing newborn screening for cystic fibrosis (CF). Infants who have a positive newborn screen require follow-up with a sweat test. Gibson-Cooke Quantitative Pilocarpine Iontophoresis (GCQPIT) requires collecting sweat in microbore tubing or on gauze/filter paper and analyzing sweat using a chloridometer. This test has many difficulties including specimens that are quantity not sufficient (QNS), many steps of pipetting solutions in the laboratory, and the need for a chloridometer to analyze sweat chloride concentration. The only manufacturer of a chloridometer has ceased production of this instrument. The CF Quantum® Sweat Test System (CFQT) overcomes all of the difficulties of GCQPIT. This pilot study will determine if the CFQT provides results that are equivalent to GCQPIT.

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Conditions studied

  • Cystic Fibrosis

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03

In context

Cystic Fibrosis

1,581 studies on the registry are indexed under Cystic Fibrosis; 190 are open to participants now.

This study's enrollment of 170 is above the median of 85 across 482 observational studies indexed under Cystic Fibrosis.

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Lead sponsor

Polychrome Medical, Inc. is the lead sponsor of 2 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
2 Days and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

pediatric pulmonology clinic

Inclusion criteria

  • clinical diagnosis of cystic fibrosis
  • patients who require a sweat test

Exclusion criteria

Exclusion Criteria:

  • Infants less than 48 hours of age
  • Patient is receiving oxygen by open delivery
  • collection site has diffuse inflammation or rash
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Study design

Observational model
Case-control
Time perspective
Prospective
Enrollment
170 participants (actual)

Groups and cohorts

  • cystic fibrosis patients

    cystic fibrosis patients

  • non-cystic fibrosis patients

    non-cystic fibrosis patients

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What researchers measure

Primary outcomes

  1. sweat chloride value

    Sweat chloride measurements obtained by GCQPIT and CFQT

    Time frame: once, at enrollment (baseline)

Secondary outcomes

  1. QNS rate

    QNS rate of CFQT compared to GCQPIT

    Time frame: once, at enrollment (baseline)

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Study locations

3 sites
  • University of Minnesota
    Minneapolis, Minnesota 55455, United States
  • University of Utah
    Salt Lake City, Utah 84012, United States
  • American Family Children's Hospital
    Madison, Wisconsin 53792, United States
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 29, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT01345617
Lead sponsor
Polychrome Medical, Inc.
Responsible party
Sponsor
First posted
May 2, 2011
Start date
Jan 2012
Primary completion
Oct 2013
Completion
Oct 2013
Last update
Aug 29, 2018

Study contacts

Michael J Rock, MD
principal investigator · University of Wisconsin, Madison

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Aug 2018. You cannot join it, but the record below documents what was studied.

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