CBC
Chemistry
Elevated Cr
Calcium, phosphate
Uric Acid
LDH - >2-3 fold increase stratifies into higher<unk>  risk
Urinalysis
ECG
Hyperkalemia, hypocalcemia
Elevated Cr
Hyperkalemia, hypocalcemia
Tumor lysis syndrome
Malignant airway obstruction
Sepsis 
Bone metastases and pathologic fractures
Hemorrhagic shock
Malignant spinal cord compression
Neurogenic shock
Malignant Pericardial Effusion and Tamponade