QAS offers a full line of custom controls. These controls
are manufactured according to each individual laboratorys
specifications. A full range of drugs and metabolites are
Custom controls are unassayed with weighed in concentrations.
Assayed values are available for an additional cost. Expiration
is up to 24 months from date of manufacture with a reconstituted
stability of 25-30 days refrigerated on most products.
Freeze dried packaging is available from 1ml to 50 ml volume
per bottle in drug-free urine and urine products. Freeze dried
packaging is also available from 1 ml to 25 ml in a drug-free
serum and blood, defibrinated plasma, human and bovine whole