Kimberly
Online Facilitator
    Post count: 4290

    This link from Quest Diagnostics explains the TBII test…TBII is not the same as TSBab. It measures all antibodies that are competing for space with TSH on the TSH receptors:

    http://www.questdiagnostics.com/hcp/intguide/EndoMetab/EndoManual_AtoZ_PDFs/TBII.pdf