i think it is B or A they make the more sense hope this helps ✌
They are different isotopes for oxygen two of te three most stable isotopes ( 16,17,18)
Each different isotope contains different amounts of Neutrons
16 contains 8
17 contains 9
18 contains 10
In the end the only difference is quantity of neutrons and which is most stable
course of action is obtain a tube of water filled to the same volume to place across from the specimen
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Why do blood samples need to be centrifuged?</h3>
The effect of heparinized blood sample centrifugation time on clinical chemistry and immunology results has rarely been studied. The WHO recommended a 15-minute centrifugation time without citing any scientific publications. The time spent centrifuging has a significant impact on the turnaround time.
On a Roche Cobas 6000 system, we examined 74 parameters in samples from 44 patients to see if there was a statistically significant difference in test results between specimens centrifuged at 2180 g for 15 minutes, 2180 g for 10 minutes, or 1870 g for 7 minutes. For each centrifugation condition, two tubes with different plasma separators (both Greiner Bio-One) were used. Deming fit was used to make statistical comparisons.
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