What It Is. An IgA test measures the blood level of immunoglobulin A, one of the most common antibodies in the body. Antibodies are proteins made by the immune system to fight bacteria, viruses, and toxins. IgA is found in high concentrations in the body's mucous membranes, particularly the respiratory passages and gastrointestinal tract, as well as in saliva and tears. IgA also plays a role in allergic reactions.
The highest recorded closing of the Dow Jones Industrial Average, as of 2015, is 18,312.39, according to FedPrimeRate.com. The DJIA crossed the 18,000 mark for the first time in December, 2014, and reached its current record in May, 2015. Continue Reading.
The Dow Jones industrial average has climbed more than 5,000 points in a year for the first time in its history, punctuating a 2017 filled with milestones. The Dow rose 140.46 points to close at 24,792.20 on Monday. That put the average's gains for the year at 5,029 points and nudged it closer to the 25,000 mark. The latest surge for blue-chip stocks is powered by Wall Streetâs positive reaction to the Republicans' tax-cut plan, which appears to be on track to pass this week.