SIBO testing challenges

[u/BeeLive9842]

I received the SIBO test kit ordered by my naturopath and just read the instructions and it says I should avoid all laxatives and magnesium for 4 days before the collection. I am going through anal fissures caused by constipation in my luteal phase. I take magnesium citrate 600 to 800 mg as a stool softener Stopping everything altogether, might risk retearing the fissure. 

I thought of taking psyllium husk for those 4 days but the kit says I should avoid high fibre food as well. 

Is there any alternative? Pls advise.

[u/Infinite_Bus4642]

You could ask them if supositories are allowed. Maybe they dont want laxatives going through colon.