Seventy Two Hours Fast for Insulinoma


Symptoms, signs, or both

Glucose (mg/dl)

Insulin (µU/ml)

C-peplide (nmol/L)

Proinsulin (pmol/L)

β-Hydroxy -butyrate (nmol/liter)

Glucose increase after glucagon (mg/dl)

Circulating oral hypoglycemic

Antibody to insulin

Diagnostic Interpretation

No

< 55

< 3

< 0.2

< 5

> 2.7

< 25

No

No

Normal

Yes

< 55

» 3

< 0.2

< 5

≤ 2.7

> 25

No

Neg (Pos)

Exogenous insulin

Yes

< 55

≥ 3

≥ 0.2

≥ 5

≤ 2.7

> 25

No

Neg

Insulinoma, NIPHS, PGBH

Yes

< 55

≥ 3

> 0.2

≥ 5

≤ 2.7

> 25

Yes

Neg

Oral hypoglycemic agent

Yes

< 55

» 3

» 0.2a

» 5a

≤ 2.7

> 25

No

Pos

Insulin autoimmune

Yes

< 55

< 3

< 0.2

< 5

≤ 2.7

> 25

No

Neg

IGFb

Yes

< 55

< 3

< 0.2

< 5

> 2.7

< 25

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Sep 18, 2016 | Posted by in ENDOCRINOLOGY | Comments Off on Seventy Two Hours Fast for Insulinoma

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