Talking about Sodium citrate, should be carrefull about the % of molarity ! when it comes to platelets, it is better to use 3.2% (0.105-0.109 M/L) - GEHT 2007. Further more, you should use an intact tube (non already used for coagulation) reagrding loss volumes (PT, APTT,Fib,...) and as always add around 10% on the final count
Can anyone share their experience with Sarstedt ThromboCount?
Some laboratories in France continue to use rarely UNOPETTE for PLT count. Not at my lab. Regarding PLT agregates on smear, Citrate 0.109 3.2% tube is demanded and PLT count is done (automatically added 10% by the Automate). The PLT contrôle count is however done in all patients facing Thrombocytopenia, where is clumps or not.
My preference also goes for Na-citrate.
when you are using Socium Citrate (blue top) anticoagulant tube for counting platelet clumps appearing in the EDTA tube (purple top), you should have the floor draw both the blue and purple tops. Then you have to multiply the platelet count obtained from the blue top by 1.1 to derive the correct platelet count.
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