In message <[log in to unmask]>, Una Mary Gibbons
<[log in to unmask]> writes
>Does anyone use SST tubes for primary tube sampling on their routine
>biochemistry analyser? We do and have been having lots of problems with the
>gel getting into the lines and ending up in the flow cell of our Beckman
>CX7 analysers. It gets a bit serious when it happens twice in one week. The
>problem is compounded by a high number of ICU and renal patients on
>anticoagulant therapy whose specimens from time to time form fibrin clots
>even after a 10 minute centrifugation. If this sounds familiar to anyone,
>I'd like to hear from you.
>Thanks,
>Una Gibbons
>P.O.Box 1331,
>Seeb C.P.O. 111
>Sultanate of Oman
>[log in to unmask]
>Tel/Fax: 968 593221
We use SST as our main tubes for primary sampling on Kodak
(Ortho/Johnson and Johnson Vitros) analysers and have little trouble.
The only problem we have with our large ITU and renal work is occasional
poor clotting due to heparin in the sample, and large gelatinous clots
prevent sampling. This is easily dealt with at sample reception stage,
if recognised, however. Are you sure it is the gel and not just fibrin
clots ? My other thought is that you are a wee bit warmer down there
than we are here and maybe the gel transforms if not stored in a cool
place.
--
Trevor Gray
Dept. of Clinical Chemistry
Northern General Hospital
Sheffield
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