Respected user, hi I evaluated your query thoroughly .
@ 
White spots are inflammed mucosa with flecks overlying 
@ 
Biopsy from the lesion is taken to rule out underlying pathology in form 
    of  H.Pylori infection , benign inflammation or some cancer cells etc .
@ Blood work is to have supportive data of systemic effects of infection /
    inflammation .
@ Advised to double the dose of 
Proton pump inhibitor capsule to give 
    faster  healing to the mucosa & combat the 
gastric acid altering the pH 
    balance .
@ Test again for 
endoscopy is recommended for evaluation the process of
    healing inside the stomach linings .
Hope this clears your query .
Welcome for any further assistance .
Thanks for using Healthcaremagic.com & giving us an opportunity to assist
Wishing your friend fine recovery from the same.
Regards dear take care .