Postby rp1954 » Tue Jul 12, 2016 1:40 pm
There have been a very few with levels like that. One discussion was around units,
e.g. ng/mL = µg/L = 0.1 µg/dL. Units are important to several possible situations.
The CEA trend you have alone, the doctor's query is whether the cancer cells are still growing, or are necrosing and releasing CEA.
There are several measures or readings that might be helpful, especially in series.
1. the MCV values in the CBC (Complete Blood Count)
2. LDH, if any values were measured, ditto AFP, d-dimer, ESR, CRP
3. CA19-9 (CA199) used more in parts of Asia and Europe, often mistaken in the US as "just a marker for pancreatic cancer" - greatly wrong due to a lack of familiarity in depth. In the US CRC patients have to insist, or order it themselves online.
The MCV is a potential guide to dosing and effect over several treatments
LDH has clues to several processes
CA199 can help type/target the cancer and find better treatments
In certain cases, Erbitux has whacked really high CEA values. The blood tests are the quickest clues, KRAS testing is longer. Without any tests, the Erbitux has a small, fractional chance of usefulness on CRC patients. The CA199 is the fastest clue without a longer Kras test.
watchful, active researcher and caregiver for stage IVb/c CC. surgeries 4/10 sigmoid etc & 5/11 para-aortic LN cluster; 8 yrs immuno-Chemo for mCRC; now no chemo
most of 2010 Life Extension recommendations and possibilities + more, some (much) higher, peaking ~2011-12, taper chemo to almost nothing mid 2018, IV C-->2021. Now supplements