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Respiratory Disorders (Expert Forum)
blood test
Answered by
This forum is for questions and support regarding lung and respiratory issues such as: Allergies, Asthma, Bronchitis, Colds - Flu, Chronic Cough, COPD, Cystic Fibrosis, Emphysema, Fibrosis, Lung Abscess, Nasal Polyps, Pleurisy, Pneumonia, Sarcoidosis, Sinusitis, Tuberculosis.
blood test
by saar, May 26, 2003 12:00AM
my niece was born in brazil and the test for her blood the dr said was 130 and should be 110 (normal) they did another test today -but results will take one week what is this? she is brazilian he is jewish -no-one in either family has this (cf) ever could he be a carrier? doesn't both have to have the gene? thank you
Doctor's Answer
by National Jewish, Jun 04, 2003 12:00AM
, Jun 04, 2003 12:00AM
The blood work that is done on an infant to test for cystic fibrosis (CF) is a genetic test. This test looks for any genetic changes that would cause CF. The "gold standard" or best test to look for CF is not a blood test. It is called a sweat test. A chemical is placed on the skin, stimulated with an electrode to trigger sweating, the sweat is collected, and the amount of chloride in the sweat is measured. A high amount of chloride in the sweat means CF. Sometimes the newest test is used to find CF. It is called a nasal potential difference (NPD). Electrodes are placed inside the nose to measure electrical currents. High measurements mean CF.
