The authors added that measurement of BPA levels in serum and other body fluids suggests the possibilities that BPA intake is much higher than accounted for , and\/or that BPA can bioaccumulate in some conditions ( such as pregnancy ) .
The measurement of BPA levels in human serum and other body fluids suggests that either BPA intake is much higher than previously thought or that BPA can bioaccumulate in some conditions such as pregnancy , or both .