Antiretroviral therapeutic drug monitoring

Referred to Lab 21 Limited, Park House, Winship Road, Milton, Cambridge CB24 6BQ

Alternative names, keywords

ARV monitoring, ARV TDM

Samples required

EDTA blood (purple cap/ yellow cap ring, 4 mL tube), or

Lithium heparin blood (green cap, 6 mL tube).

Smaller tubes are available for paediatric samples.

Trough (pre-dose) samples preferred, especially if checking if concentration in desired target range, Peak may be useful if querying toxicity (samples accepted from 4h post dose - please specify time for interpretation).

Samples should reach lab within 4 hours of collection. Please also supply completed Lab21 request form.

Request form and full sampling information including tests offered are available on Lab21 website.

Test indications

Therapeutic drug monitoring of antiretroviral drugs.

Reference range

See report.

Turnaround time

Referral lab states samples are analysed within a maximum of 14 days from receipt at their lab, and results returned directly to the requesting clinician.


Biochemistry (Referrals)