Brief Answer: Low glucose Detailed Answer: I am sorry to hear about your daughters' condition. Hope she gets better soon. She has hypoglycemia ie low glucose. People with diabetes get low glucose reactions only if they are on certain types of medications that are capable of producing low glucose reactions, such as Insulin and specific types of pills only. So even if your daughter has diabetes, she cannot get low glucoses just like that unless she is on the mentioned types of medications. I have noted the GIST. Sometimes individuals with such types of tumors produce a substance called IGF2 (Insulin like Growth factor 2) which acts like Insulin and produces severe low glucose levels in the blood that can be XXXXXXX Your daughter needs vigilant care and continuous glucose infusion through the veins in the hospital to maintain her blood glucose levels in the normal range of 70 to 100. It is ok to keep it even a bit higher than normal such as 100 to 150 rather than risking going low (below 70) Once the glucoses are, as a priority, brought back up in a stable manner in to the realm of normal, then the above mentioned blood test can be sent off to a specialty lab, because it is a rare type of test and will not be readily available. It is not to be confused with IGF1 (insulin like Growth factor 1) Evaluation of hypoglycemia requires considerable expertise and an extensive evaluation that is best performed by an endocrinologist. Several tests need to be done such as CBC CMP TSH Free T4 8 am cortisol Insulin auto antibodies IGF2 Glucose, if below 5 then Insulin Pro Insulin C peptide Beta hydroxy butyrate Oral hypoglycemic agent panel After these samples are drawn, Glucagon needs to be injected and blood glucose needs to be drawn at 10, 20 and 30 minutes to see if the blood glucoses recover back to normal. This gives important clues to the diagnosis

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