Gastrointestinal bleeding scintigraphy is used to locate and estimate the extent of an active bleeding by using Tc-99m labeled red blood cells (RBCs).

Whole body scintigraphy is the measurement of radioactivity in the entire body.
Whole body scintigraphy is useful for example in detection of tumors, infections, evaluation of metastases, and diseases with multiple organ involvement.
Different whole body scan techniques include: