Flucytosine assays: Practicalities of taking a sample.

• The 1st flucytosine assays should be done 24 hours after starting therapy. 
• Both "pre-dose" and "post-dose" samples are required.
• Take a blood sample (gold top serum separator tubes (preferred) or red top) immediately before the dose as the "pre-dose". 
• Administer the dose of flucytosine.
• Take another blood sample (gold top serum separator tubes (preferred) or red top) exactly one hour after the dose as the "Post dose".
• The request card should be completed with as much information as possible to allow interpretation of the assay result. Click here for further details.
• The "Pre-dose" and "Post-dose" samples should be sent as a pair to the microbiology laboratory.

Click here to return to the main "Flucytosine assays" page.

Page last edited: 24/09/2008

Caution; the antibiotic doses recommended on this website are intended for adult patients with normal renal and liver function unless otherwise stated. Dosing advice for patients with renal impairment is available here.

Read our copyright and disclaimer statement