Nik Colon wrote:Most say <2.5 for non smoker and <5.0 for smoker. I have heard slight variences, but that is the common.
rp1954 wrote:Although statistics for your cancer pathology are favorable, safety is to consider the fraction that do recur. Bloodwork matters to catch problems early and to identify successful treatments. These blood data are best kept together on a spreadsheet. If you don't want to confront the doctor, it is possible to order it yourself, like at Life Extension. Personally, I prefer to consult doctors that can contribute or at least follow the story.
Jack&KatiesMommy wrote:There are two testing methodologies used to test for CEA. One has an upper limit of 2.5 for a non-smoker...the other method has an upper limit of 5.0 for a non-smoker.
Test : C.E.A.
Method: Electrochemiluminescence - Cobas - Roche Diagnostics
- For non-smoking patients, the upper normal limit is 3.8 ng/ml (5.0 ng/ml if the patient is over 40 years of age)
- For patients who are current smokers, the upper normal limit is 5.5 ng/ml (6.5 ng/ml if the patient is over 40 years of age)
WriterGirl1969 wrote: “What is "normal" CEA?”
Jacques wrote:Jack&KatiesMommy wrote:There are two testing methodologies used to test for CEA. One has an upper limit of 2.5 for a non-smoker...the other method has an upper limit of 5.0 for a non-smoker.
On my lab printout it lists the name of the manufacturer of the CEA assay (Roche Diagnostics) as well as the upper limits for normal (English translation given below):Test : C.E.A.
Method: Electrochemiluminescence - Cobas - Roche Diagnostics
- For non-smoking patients, the upper normal limit is 3.8 ng/ml (5.0 ng/ml if the patient is over 40 years of age)
- For patients who are current smokers, the upper normal limit is 5.5 ng/ml (6.5 ng/ml if the patient is over 40 years of age)
Normally, the name of the assay or the test machine is given in a footnote in the lab report, and the normal range information is given in the report itself.
Maybe you could double-check your lab printout to see if it contains any of this information in a footnote.
.WriterGirl1969 wrote: “What is "normal" CEA?”
My interpretation - If your CEA is reported as 3.11 ng/ml and the oncologist says that it is within the normal range, then this suggests that your lab test might have been done using the Roche Diagnostics assay method and that your upper normal limit would then be 5.0 ng/ml.
Jacques wrote:On my lab printout it lists the name of the manufacturer of the CEA assay (Roche Diagnostics) as well as the upper limits for normal (English translation given below):Test : C.E.A.
Method: Electrochemiluminescence - Cobas - Roche Diagnostics
- For non-smoking patients, the upper normal limit is 3.8 ng/ml (5.0 ng/ml if the patient is over 40 years of age)
- For patients who are current smokers, the upper normal limit is 5.5 ng/ml (6.5 ng/ml if the patient is over 40 years of age)
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