Re: [Histonet] ISH Decal specimens

2023-06-25 Thread Greg Dobbin via Histonet
Use a formic acid based decal solution and MAKE SURE the specimen does not fix (formalin fixation) longer than 32hrs (false negatives result). Use 70% ETOH to manage the fixation time (ie fix for 24 hours, decal for 4 hrs, place in 70% ETOH until it gets put on the processor. Hold in 70% ETOH for

Re: [Histonet] ISH decal specimens

2023-06-23 Thread Val Tolley via Histonet
Hi Kendra- Decal Stat from Statlab is HCl based, therefore is not appropriate for subsequent IHC, ISH, or other molecular studies. There is lots of peer-reviewed published data, if you need to supply rationale to your pathologists. HCl is known to significantly reduce molecular assay

[Histonet] ISH decal specimens

2023-06-23 Thread Kendra Beechie ND-Bismarck via Histonet
Hello all, Recently, the Kappa/Lambda ISH has quit working on our decal specimens. When we first validated ISH, we tested decal specimens that stained appropriately. We use the DECAL Stat from StatLab. I did NOT do the initial ISH validation back in 2019, but as far as I know, we have not changed