Lab results questions

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twinkiet
Regular Member


Date Joined Mar 2009
Total Posts : 48
   Posted 4/3/2009 9:53 PM (GMT -7)   
The dr once again left info on my cell phone voicemail but good think I asked the lab to send me results. Does anyone know what the Complement C4 test is for and my result was 40. Also the antiextractable Nuclear Ag RNP Antibodies result was 106. Can someone explain what this means in dummy terms for me?
 
thanks!

Melissa D.
Regular Member


Date Joined Aug 2008
Total Posts : 342
   Posted 4/3/2009 10:32 PM (GMT -7)   
Hi Twinkiet,

C4 is used to measure protiens in the kidney. Here is a site I use to locate information when I have questions on my blood work. They had some good info on C4 as well. I just type the test in the search category. http://www.hss.edu/conditions_14346.asp

Test: Complement, CH50, C3, C4 - Complement is a series of proteins that help antibodies fight antigens: CH50 refers to the amount of complement necessary to destroy 50% of red blood cells in an immune reaction. C3 and C4 are the third and fourth components of the complement proteins.

What test is for: Complement is used up in immune reactions such as lupus.

What a positive test means: Low levels of complement mean the body is undergoing a severe immune reaction, primarily in the kidneys. Lupus is one cause, but there are many others. CH50 is usually 150-300 units. C3 is about 80-150 mg/dL. C4 is about 15-40 mg/dL.

What a negative test means: Normal levels of complement make lupus inflammatory kidney disease unlikely. Other types of kidney disease, such as leaky kidneys or scarring, can still occur even if complement is normal. Other types of lupus do not usually lower complement.


Melissa
Lupus - 1997   Fibro - 2001    Sjorens  -  2007   Raynauds  -  2008
Plaquenil, Imuran, Prednisone, Synthroid, Topomax, Effexor, Norco, Prilsec, Xanex, Elidel, Restasis

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