Re: [Histonet] Unstained slides - how long are they good for?

2018-08-19 Thread Mark Tarango via Histonet
Hi Everyone! I have seen unstained slides save a patient from re-biopsy many times. Usually it will be a case where a patient has a known diagnosis, like lung cancer. In these types of cases after diagnosis molecular testing (and IHC for PD-L1) is usually ordered. There have been countless

Re: [Histonet] Unstained slides - how long are they good for?

2018-08-19 Thread Jamie Watson via Histonet
To expand on what we do at our research lab; we use 6 months as a standard maximum age of unstained slides. Also in the staining protocol for each antibodyl we have a specific shelf life for the diluted Antibody and a maximum age of unstained slides. Jamie

Re: [Histonet] Unstained slides - how long are they good for?

2018-08-19 Thread Hobbs, Carl via Histonet
I agree with Jamie Only a few Ags are "oxidised" ( that's the term used, I recall) but, don't let it be YOUR protein of interest. If you really are concerned, cut fresh sections and immunostain along with your stored sections. Imho: cut as few sections as you need. Store any unused at 4C

Re: [Histonet] Unstained slides - how long are they good for?

2018-08-17 Thread Frazier, John via Histonet
I’m a histology workflow consultant that visits many AP laboratories each year. Almost every laboratory has a different retention policy. The average of most laboratories is to hold onto unstained slides for three weeks after final sign out. Typically the unstained slide can be held for a long

Re: [Histonet] Unstained slides - how long are they good for?

2018-08-17 Thread Morken, Timothy via Histonet
a Histonet [mailto:histonet@lists.utsouthwestern.edu] Sent: Thursday, August 16, 2018 4:49 PM To: HistoNet Subject: [Histonet] Unstained slides - how long are they good for? Hello My Fellow Histologists, Happy Friday Eve. The question has come up.. How long are *unstained* slides good for?

Re: [Histonet] Unstained slides - how long are they good for?

2018-08-16 Thread Tony Henwood (SCHN) via Histonet
nohistochemistry & Molecular Morphology, 26(7), 489-494. -Original Message- From: P Sicurello via Histonet [mailto:histonet@lists.utsouthwestern.edu] Sent: Friday, 17 August 2018 9:49 AM To: HistoNet Subject: [Histonet] Unstained slides - how long are they good for? Hello My Fellow Histo

Re: [Histonet] Unstained slides - how long are they good for?

2018-08-16 Thread Jamie Watson via Histonet
It depends on the stability of the protein and fixation, some are stable for a week some for years. We use 6 months as a standard. Jamie On August 16, 2018 4:59:34 PM P Sicurello via Histonet wrote: > Hello My Fellow Histologists, > > Happy Friday Eve. > > The question has come up.. How

[Histonet] Unstained slides - how long are they good for?

2018-08-16 Thread P Sicurello via Histonet
Hello My Fellow Histologists, Happy Friday Eve. The question has come up.. How long are *unstained* slides good for? Not for H but tests like IHC and molecular testing. These slides have been cut, stored at room temperature, not sealed in anyway, and kept in a cardboard box. Please let me