So we have a suspicion that this may be PNH – and flow cytometry has been requested.  We still have the issue of this patient who is symptomatic of his anaemia, and episodes of dysphagia.  He is admitted onto the medical ward and you review him.  He informs you that he does pass dark urine intermittently confirming your suspicion of PNH.

How would you manage this patient?

Further investigations along with the flow cytometry?

What could be the potential complications in this case?