C 13 is an improved version of C 14. In the carbon-14C breath test, 14C is not as stable as 13C, and it is a little radioactive, but the radiation distance is only 22cm, and the average radiation energy is only 50 kV, and the peak value is 80keV.

Second, the stability is different:

C 14 is not as stable as C 13, and it is a little radioactive. C 13 is an improved version of C 14, and it is not radioactive. Because it is a stable radionuclide, it is harmless to human body and has high sensitivity and specificity, which is more suitable for pregnant women, children and the elderly and infirm. Compared with C 13, the price of C 14 is slightly cheaper.

Extended data

Advantages:

1 and C 13 breath test results are more accurate. The samples were stored in the dark for 24 hours at room temperature, and the results were not affected. The inspection process is safe, simple and fast. Suitable for a wide range of people, suitable for all ages, including children, pregnant women and elderly and infirm groups.

2.C 14 is not radioactive and does no harm to human body and environment. The operation is simple, and the result can be obtained in three minutes; The examinee only needs to blow two breaths, and the compliance is good. Special reagent cup, safe and convenient, granular reagent, fast absorption.