Hiii... My Name Sam. My Brother Have Test Hiv At

Hiii... My name sam. My brother have test hiv at china at 4 march, result negative. At 6 march he have the first hemo dialysis at china general hospital as he is detected with kidney failure. And do stemcell treatment on 9 march at china hospital. On 16 march he get back to indonesia and have hiv test with result:
CMIA test : reactive.
Immunochromatograhy : non reactive.
ELFA : non reactive.
Interpretation : indeterminate.
He have no any drug abuse or free sex history.
Is the result show he is hiv risk due to dialysis and stemcell treatment?
Thank you for your answer.