Back calculation for QC purpose [General Sta­tis­tics]

posted by msmnainar – India, 2012-06-25 10:46 (5103 d 04:26 ago) – Posting: # 8839
Views: 7,917

Dear ElMaestro

Post to your response am having few queries reg back calculation, kindly guide me,

For eg.,

Obtained Total Bound Bile acid Concentration, mM (x/m)

Concentration   Product X
     1            1.2595
     2            1.9113
     3            3.2978
     4            4.3539
     5            4.8442
     6            6.251
     7            5.843
     8            5.772
     9            4.6759
Mean              4.2454
Sum              38.2086


Obtained Total Unbound Bile acid Concentration, mM (ceq)

Concentration   Product X
     1            0.7409
     2            1.0893
     3            1.7033
     4            2.6475
     5            5.1578
     6            8.7521
     7           14.161
     8           19.233
     9           25.3301
Mean              8.7572
Sum              78.815


Obtained k1 and k2 values:
k1 = 1.2071
k2 = 5.4189

Back calculated value for Ceq = 2.9970 using mean data (x/m), as per the provided formula
C = (1/(k1k2))/((1/(x/m)-1/k2))

Kindly guide me, if am correct this value should matches with obtained Ceq value for product x mean value or any further comparison should be done.

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Hello Helmutji

It was very nice to meet you at Budapest during 3rd international regulatory conference. Need your expertise in this regard.

Sundar. M

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