Validasi Metode Analisis Dan Prosedur

July 25, 2019 | Author: shessy-jolycia-kerrora-3047 | Category: N/A
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Validasi Metode Analisis Metode validasi adalah proses yang digunakan untuk mengkonfirmasi bahwa prosedur analitis digun...

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Validasi Metode Analisis Metode validasi adalah proses yang digunakan untuk mengkonfirmasi bahwa prosedur analitis digunakan untuk tes tertentu cocok untuk digunakan. Hasil dari validasi metode dapat digunakan untuk menilai kualitas, keandalan dan konsistensi dari hasil analisis, melainkan merupakan bagian integral dari setiap praktek analitis yang baik. metode Analytical perlu divalidasi atau revalidated a.

sebelum diperkenalkan ke dalam penggunaan rutin;

b.

setiap kali perubahan kondisi untuk metode mana yang telah divalidasi

(misalnya, instrumen dengan karakteristik yang berbeda atau sampel yang berbeda dengan matriks) c.

kapan metode ini berubah dan perubahan di luar lingkup asli metode ini.

Metode validasi telah menerima perhatian yang cukup besar dalam literatur dan dari komite industri dan badan pengatur. a.

The US FDA cGMP permintaan di bagian metode yang akan divalidasi:

Ketelitian, sensitivitas, spesifisitas, dan reproduksibilitas metode pengujian yang digunakan oleh perusahaan harus dibuat dan didokumentasikan. validasi semacam itu dan dokumentasi dapat dicapai sesuai persyaratan-persyaratan termasuk pernyataan dari setiap metode yang digunakan dalam pengujian sampel yang tepat untuk memenuhi standar akurasi dan reliabilitas, sebagaimana yang diterapkan untuk produk diuji. FDA Amerika juga mengusulkan bimbingan industri untuk Analitik Prosedur dan Metode Validasi. b.

ISO / IEC 17025 mencakup sebuah bab tentang validasi metode dengan daftar

sembilan parameter validasi. The ICH telah mengembangkan teks validasi konsensus mengenai prosedur analitis. Dokumen tersebut mencakup definisi untuk delapan karakteristik validasi. ICH juga mengembangkan pedoman dengan metodologi rinci . c.

US EPA dipersiapkan untuk menjadi pedoman pembangunan dan validasi

metode untuk Konservasi Sumber Daya dan Recovery Act (RCRA). The

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AOAC, EPA dan organisasi ilmiah lain memberikan metode yang disahkan melalui studi multi-laboratorium. USP telah menerbitkan pedoman khusus untuk validasi metode untuk evaluasi senyawa. USP mendefinisikan delapan langkah untuk validasi: a.

Ketepatan

b.

Ketelitian

c.

Kekhususan

d.

Batas deteksi

e.

Batas kuantisasi

f.

Linieritas dan jangkauan

g.

Kekasaran

h.

Kesegaran

FDA juga telah menerbitkan petunjuk untuk validasi metode bioanalytical. Bioekuivalensi dan

Perwakilan dari industri farmasi dan kimia telah menerbitkan makalah di

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Wegscheider telah menerbitkan prosedur untuk validasi metode dengan fokus

Pelajaran ini memberikan review dan strategi untuk validasi metode analisis

Validitas dari metode spesifik harus ditunjukkan dalam percobaan laboratorium

sebaiknya ditulis

dalam

instruksi langkah

demi

langkah

1. Mengembangkan protokol validasi, sebuah prosedur operasi atau rencana validasi master untuk validasi

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5. Tentukan parameter kinerja dan kriteria penerimaan 6. Tentukan validasi eksperimen 7. Verifikasi karakteristik kinerja peralatan yang relevan 8. Kualifikasi bahan, misalnya standar dan reagen untuk kemurnian, jumlah yang cukup akurat dan stabilitas

14. Menetapkan jenis dan frekuensi uji kesesuaian sistem dan / atau pengendalian mutu analitis (AQC) cek untuk rutin 15. Dokumen validasi eksperimen dan hasil dalam laporan validasi Keberhasilan penerimaan parameter validasi dan kriteria kinerja, oleh semua

Ruang lingkup metode dan kriteria validasi yang harus didefinisikan pada awal proses. Ini termasuk pertanyaan-pertanyaan berikut: a.

Apa analit harus terdeteksi?

b.

Apa tingkat konsentrasi yang diharapkan?

c.

Apakah matriks sampel?

d.

Apakah ada zat campuran yang diharapkan, dan jika demikian, zat campuran

tersebut harus dideteksi dan dihitung? e.

Apakah ada peraturan khusus legislatif atau persyaratan?

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i.

Apa yang presisi dan akurasi diharapkan?

j.

Bagaimana metode yang sesuai?

k.

Jenis peralatan yang harus digunakan? Apakah metode untuk satu instrumen

tertentu, atau seharusnya itu digunakan oleh semua instrumen dari jenis yang sama? l.

Apakah metode yang digunakan dalam satu laboratorium khusus atau

seharusnya itu bisa diterapkan di semua laboratorium di satu sisi atau seluruh dunia? m. Keterampilan apa yang telah diantisipasi pengguna metode ini?

Karakteristik performa Metode harus didasarkan pada tujuan penggunaan

Ruang lingkup metode ini juga harus mencakup berbagai jenis peralatan dan

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kuantitatif

kuantitatif

kualitatif

kualitatif

batas deteksi tidak

Tidak

Ya

tidak

batas

tidak

Ya

Tidak

ya

linieritas

ya

Ya

Tidak

ya

jarak

ya

Ya

Tidak

tidak

ketelitian

ya

Ya

Tidak

ya

ketepatan

ya

Ya

Tidak

ya

kekhususan ya

Ya

Ya

ya

kekasaran

Ya

Tidak

mungkin

kuantisasi

ya

Tabel 2. Validasi parameter untuk tugas-tugas tertentu Percobaan validasi harus dilakukan oleh seorang analis yang berpengalaman

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1. tersedia dalam jumlah yang cukup,

Setiap bahan lainnya dan bahan habis pakai, misalnya, kromatografi kolom, harus baru dan memenuhi syarat untuk memenuhi kriteria performa kolom. Hal ini

Jika ada sedikit atau tidak ada informasi tentang karakteristik performa metode,

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5. Selektivitas dengan sampel nyata

Percobaan yang memakan waktu lebih, seperti akurasi dan kekerasan, termasuk

Selama validasi metode, parameter batas penerimaan, dan frekuensi uji

Setelah metode ini telah dikembangkan dan divalidasi, laporan validasi yang harus disiapkan adalah sebagai berikut: a.

Tujuan dan ruang lingkup metode (diterapkan, tipe).

b.

Ringkasan metodologi.

c.

Jenis senyawa dan matriks.

d.

Semua bahan kimia, reagen, standar acuan, QC sampel dengan kemurnian,

kelas, sumber atau petunjuk rinci tentang persiapan mereka.

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k.

Kondisi rinci tentang bagaimana percobaan dilakukan, termasuk persiapan

sampel. Laporan tersebut harus cukup rinci untuk memastikan bahwa itu bisa direproduksi oleh teknisi kompeten dengan peralatan yang sebanding. l.

Prosedur dan perhitungan statistik representatif.

m. Prosedur QC dalam analisis rutin, misalnya, sistem tes kesesuaian. n.

Perwakilan plot, misalnya, kromatogram, spektra dan kurva kalibrasi.

o.

Metode batas kinerja penerimaan data.

p.

Ketidakpastian yang diharapkan dari hasil pengukuran.

s.

Referensi (jika ada).

t.

Ringkasan dan kesimpulan.

u.

Persetujuan dengan nama, judul, tanggal dan tanda tangan dari mereka yang

bertanggung jawab untuk meninjau dan persetujuan dari prosedur tes analitis. Verifikasi Metode Standar

Sebuah laboratorium menerapkan metode spesifik harus telah mendokumen-

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persyaratan bahwa tingkat validasi metode tertentu adalah cukup untuk tujuan yang

1. Metode standar's validasi data yang memadai dan cukup untuk memenuhi persyaratan's metode laboratorium. 2. laboratorium harus dapat mencocokkan data performa seperti yang dijelaskan dalam standar. Hasil harus didokumentasikan dalam protokol validasi. Kedua dokumen akan menjadi sumber utama untuk laporan validasi.

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diperpanjang, misalnya, jika sampel perubahan operasi matriks atau jika kondisi

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Setiap kali ada perubahan yang mungkin memerlukan revalidation sebagian

a. sampel baru dengan senyawa baru atau matriks baru, b. analis baru dengan keahlian yang berbeda, c. instrumen baru dengan karakteristik yang berbeda, d. Lokasi baru dengan kondisi lingkungan yang berbeda, e. baru bahan kimia dan / atau referensi standar dan f. modifikasi parameter analitik.

Sebuah evaluasi harus menentukan apakah perubahan tersebut adalah dalam

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Istilah selektivitas dan spesifisitas sering digunakan secara bergantian. Sebuah

Meskipun tidak konsisten dengan ICH, istilah yang spesifik umumnya mengacu

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Prinsip-array deteksi dioda dalam HPLC dan aplikasi mereka dan batasan yang

Studi Selektivitas juga harus menilai gangguan yang mungkin disebabkan oleh

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Ketepatan metode (Tabel 4) adalah sejauh mana hasil uji individu suntikan

The ICH membutuhkan presisi dari setidaknya 6 ulangan yang akan diukur pada

kriteria penerimaan ini untuk presisi sangat tergantung pada jenis

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100

1

100%

1,3

10

10

10%

2,8

1

10-2

1%

2,7

0,1

10-3

0,1%

3,7

0,01

10-4

100 ppm

5,3

0,001

10-5

10 ppm

7,3

0,0001

10-6

1 ppm

11

0,00001

10-7

100 ppb

15

0.000001

10-8

10 ppb

21

0.0000001

10-9

1 ppb

30

-1

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b.

Operator dengan pengalaman yang berbeda dan ketelitian

c.

Peralatan dengan karakteristik yang berbeda, misalnya volume penundaan

sistem HPLC d.

Variasi material dan kondisi instrumen, misalnya dalam HPLC, mobile

komposisi fase, pH, laju alir fasa gerak e.

Variasi rincian eksperimental tidak ditentukan oleh metode

f.

Peralatan dan bahan habis pakai dari usia yang berbeda

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faktor pemulihan dihitung untuk konsentrasi yang berbeda dapat digunakan untuk memperbaiki hasil akhir. Konsentrasi harus mencakup rentang perhatian dan harus mencakup konsentrasi

Dokumen ICH pada metodologi merekomendasikan akurasi validasi akan

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sumbu y dan konsentrasi yang sesuai pada sumbu x-, pada skala log. Garis horizontal

ICH merekomendasikan, untuk pelaporan akurasi, linieritas kurva koefisien

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Jarak

Kisaran suatu metode analisis adalah interval antara bagian atas dan tingkat bawah (termasuk tingkat-tingkat) yang telah menunjukkan akan ditentukan dengan

Untuk tes uji, yang ICH memerlukan rentang minimum spesifikasi untuk

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konsentrasi atau massa analit uji. Dalam istilah praktis, sensitivitas kemiringan kurva

Pada kromatografi, batas deteksi adalah jumlah injeksi yang menghasilkan puncak

1. Inspeksi visual: Batas deteksi ditentukan oleh analisis sampel dengan

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Batas kuantisasi adalah jumlah minimum yang disuntikkan menghasilkan

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Kekasaran

Ketidakrataan tidak dibahas dalam dokumen ICH telah digantikan oleh

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otomatis).Dalam keadaan ini, pengembangan metode harus menyelidiki stabilitas analit dan standar. Sistem stabilitas jangka telah didefinisikan sebagai stabilitas dari sampel yang

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Parameter yang Harus Ada dalam Validasi Metode

Untuk proses validasi efisien, sangat penting untuk menentukan parameter

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Assay Tugas Analitik

Kategori

Cat kuantitatif

2 Cat kualitatif

3 Assay Cate 3

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