HER2 Support Group Forums - View Single Post

Julie2 · 02-12-2009, 11:49 AM

Her2 serum test should no be taken during menstrual period. During periods estrogen level will be lowest and Her2 is inversely proportional to estrogen so the test will give false positives.
My own experience proves this. Last time unknowingly I took the Her2 serum test during my period and it came to 12.4 and I was very alarmed. I repeated the test after 3 weeks and it came back to 9.0.

Hope this helps people who are taking their Her2 serum test.

Julie

02-12-2009, 11:49 AM	#3
Julie2 Senior Member Join Date: Sep 2005 Posts: 556	Her2 serum test should no be taken during menstrual period. During periods estrogen level will be lowest and Her2 is inversely proportional to estrogen so the test will give false positives. My own experience proves this. Last time unknowingly I took the Her2 serum test during my period and it came to 12.4 and I was very alarmed. I repeated the test after 3 weeks and it came back to 9.0. Hope this helps people who are taking their Her2 serum test. Julie __________________ Diagnosed in Sept 2004 while pregnant with the second child. Stage 3b, tumor 4.5cm, 4 auxillary and supraclav node positive. Her2+++ FISH 9.4 and er-,pr-. Had dose dense neoadjuvant AC,Taxol then mastectomy,radiation+xeloda+Herceptin.