E eleni h New member Aug 25, 2009 #1 my cycle is usually 33 days long. i used a high sensitivity urine test (10 mlU). could it be a false negative test? how rare is a false negative in such a case?
my cycle is usually 33 days long. i used a high sensitivity urine test (10 mlU). could it be a false negative test? how rare is a false negative in such a case?
