Bioequivalence and Bioavailability Forum • Selectivity

avinash
★

India,
2018-11-13 13:30
(2776 d 02:23 ago)

Posting: # 19595
Views: 5,668

Selectivity [Bioanalytics]

Dear Members,

In Bioanalytical Method Validation - Guidance for Industry - May 2018, For Selectivity parameter one of the acceptance criteria is mentioned as “Blank and zero calibrators should be free of interference at the retention times of the analyte(s) and the IS”.

Which means? Should we run Selectivity samples with calibrators?

Practice is after Specificity and Selectivity, pooling of matrix lots and spiking of calibrators and quality control samples.

Please opine.

Thanks & regards,
Avinash Jain M V

Edit: Category changed; see also this post #1. [Helmut]

Ohlbe ★★★ France, 2018-11-13 14:56 (2776 d 00:57 ago) @ avinash Posting: # 19596 Views: 4,615	Selectivity Post reply
	Dear Avinash, ❝ Which means? Should we run Selectivity samples with calibrators? Not necessarily a full calibration curve, but at least samples spiked at the LLOQ, so that you can compare the signal in the blanks to the signal at the LLOQ. — Regards Ohlbe

avinash ★ India, 2018-11-14 05:35 (2775 d 10:19 ago) @ Ohlbe Posting: # 19599 Views: 4,537	Selectivity Post reply
	Dear Ohlbe, Thank you for the response. Regards, Avinash

chandru
☆

India,
2019-01-01 13:16
(2727 d 02:37 ago)

@ Ohlbe
Posting: # 19720
Views: 4,155

Selectivity

Post reply

Dear Ohlbe,

❝ Not necessarily a full calibration curve, but at least samples spiked at the LLOQ, so that you can compare the signal in the blanks to the signal at the LLOQ.

For Selectivity experiment whether only 8 blanks and 8 LLOQ is sufficient.

Because even in our company we have changed the procedure of performing Selectivity by running this samples against freshly spiked Calibration and quality control samples.

Regards

Chandru