Cancer of unknown primary origin laboratory findings

There are no specific diagnostic laboratory findings associated with cancer on unknown primary origin; however, certain abnormal laboratory findings may help in locating the primary origin of the tumor.

There are no specific diagnostic laboratory findings associated with cancer on unknown primary origin; however, certain abnormal laboratory findings may help in locating the primary origin of the tumor.

• CBC
  • Iron deficiency may be a sign of gastric or colorectal cancer causing blood loss
• Urinalysis
  • Hematuria may point towards bladder cancer
• Liver function tests
• Fecal occult blood test
• PSA

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