Having two significations equally applicable; capable of double interpretation; of doubtful meaning; ambiguous; uncertain; as, equivocal words; an equivocal sentence
Therefore a T-spot TB result can be Yes, No or both Yes and No.
Quantiferon is either a simple Yes or No, an indeterminate is a low response to the mitogen stimulated control indicating a procedural problem or lowered immune system.
With T-Spot TB the ambiguous results are not in the control but within the actual test itself, the conclusion from the quantity of effector T cells responding to ESAT- 6 and CFP10 antigens is not clearly defined.
