What's the standard method of oral Glucose tolerance test? are there 2 terms - OGCT (oral Glucose challenge test) , OGTT (Oral glucose tolerance test), both are same or different? since i have family history of diabetes in 1st trimester itself my gynac suggested me to take OGCT. the phlebotomist in lab told me in OGCT fasting blood sample, urine sample drawn out. then 75gm of glucose diluted in water should be consumed, post which 2 hours gap blood sample one time urine  sample are drawn. is this right method or samples should be collected in 30mins, 60mins interval,post consumption?