In addition to biological variability and some CF transmembrane conductance regulator mutations, false negative sweat testing
may occur due to technical errors (13).
Data from 2005 from the Red Cross War Memorial Children's Hospital CF clinic cohort in Cape Town indicated that the median age of diagnosis and survival age during the preceding 33 years were 6 months and 19.8 years, respectively. Absence of newborn screening, limited access to sweat testing
for diagnosis and restricted availability of expensive CF medications (such as inhaled rhDNAse) or lung transplantation are barriers to improving CF survival in SA.
- US-based sweat testing
specialist ELITechGroup Biomedical Systems has release the new FDA-cleared Macroduct Advanced Sweat Collection System, the company said.
Newborns identified with meconium ileus should also have sweat testing
performed before a diagnosis of CF may be made (13).
Massie, "The relevance of sweat testing
for the diagnosis of cystic fibrosis in the genomic era," Clinical Biochemist Reviews, vol.
in opioid users with a sweat patch," Journal of Analytical Toxicology, 20(6): 393-397.
He helped develop the National Guidelines for acute asthma in children, sweat testing
and neonatal screening.
The CF Foundation (CFF) published specific guidelines for sweat testing
performed by laboratories across the United States.
"We also did sweat testing
and had some people from Loughborough here to help.
[3.] Clarke A., Burn J.: Sweat testing
to identify female carriers of X-linked hypohidrotic ectodermal dysplasia.
Physicians in our environment have become increasingly aware of this atypical form of CF and have a lower threshold for diagnostic testing, including sweat testing
Inconsistencies in sweat testing
in UK laboratories.