What tests do I need right after being diagnosed with Pancreatic Cancer

Essential Tests After a Pancreatic Cancer Diagnosis

After being diagnosed with pancreatic cancer, your medical team will order several important tests to understand your specific cancer and guide treatment decisions. Here's what you should expect:

1. Molecular/Genetic Testing of Your Tumor

This is one of the most important tests you'll have. According to Dr. [removed] Strickler from Duke University's precision cancer medicine program, every pancreatic cancer patient should ask their doctor: "Have you done the molecular profiling on my cancer? Can I see the report?"

What it tests for:

• KRAS mutations - Found in about 87% of pancreatic cancers, KRAS is a major driver of the disease. Identifying KRAS mutations is crucial because new targeted therapies are now available that can specifically attack these mutations
• Other genetic alterations - Including BRCA mutations, which may make you eligible for specific therapies like olaparib (an FDA-approved drug for BRCA-mutated pancreatic cancer)
• Additional rare mutations - Your doctor will look for other actionable targets that might open up treatment options

Why it matters: According to the CancerPatientLab webinar on "Navigating Pancreatic Cancer," survival can double when patients with specific mutations are treated with targeted therapy rather than standard chemotherapy alone.

2. Germline (Inherited) Testing

This test checks whether you carry inherited genetic mutations that increase cancer risk. According to national guidelines cited by Dr. [removed], genetic testing for inherited mutations is now recommended for all pancreatic cancer patients.

This is important because:

• It identifies if you have hereditary cancer syndromes
• It helps your family understand their own cancer risk
• It may make you eligible for certain targeted therapies

3. Imaging Studies

You'll typically have:

• CT scan - To see the size and location of your tumor and whether it has spread
• MRI/MRCP - May be used to get detailed images of the pancreas and bile ducts
• PET scan - To check if cancer has spread to other parts of your body

4. Blood Tests

Standard blood work includes:

• CA 19-9 - A tumor marker (protein) that can indicate pancreatic cancer activity
• Liver function tests - To check if the cancer is affecting your liver
• Kidney function tests - Important before starting treatment
• Complete blood count - To check your overall blood health

5. Liquid Biopsy (Circulating Tumor DNA)

This is a blood test that looks for cancer DNA circulating in your bloodstream. Important to understand: Dr. [removed] explains that while liquid biopsies are convenient (just two tubes of blood), they have significant limitations for pancreatic cancer specifically.

Because pancreatic tumors are "desmoplastic" (surrounded by lots of fibrous tissue), they release less DNA into the bloodstream compared to other cancers. This means the test may show "nothing" even when cancer is present in tissue. For this reason, tissue-based molecular profiling is often more reliable than blood tests alone for pancreatic cancer.

6. Tissue Biopsy (if not already done)

If your diagnosis wasn't confirmed with tissue, you may need a biopsy to get tumor samples for molecular testing. This provides the most accurate genetic information about your specific cancer.

Important Questions to Ask Your Doctor

Based on the guidelines, you should ask:

1. "Have you done molecular profiling on my tumor? Can I get a printed copy of the report?" - Keep this with you, as it often doesn't automatically transfer between healthcare providers
2. "Do I have any actionable mutations like KRAS, BRCA, or others?"
3. "Should I have germline (inherited) genetic testing?"
4. "Are there clinical trials I might be eligible for based on my tumor's genetic profile?"
5. "What are my treatment options given my specific molecular findings?"

Why This Matters

According to Dr. [removed] presentation on precision cancer medicine, pancreatic cancer is finally entering an era where personalized treatment based on your tumor's genetics can make a real difference. The goal is to bring the right treatment to the right patient at the right time — potentially sparing you ineffective therapies while giving you treatments specifically designed for your tumor's mutations.

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This information is for educational purposes only. Always consult your healthcare team for personalized medical advice and decisions.