Concentrations (example)

Please note: All concentrations shown here are exemplatory. They do not reflect real data for the described products. Actual concentrations depend on the production lot of each product and can exclusively be found in the product information leaflet. Please ask for these product information leaflets or download them from the service site of the Chromsystems website.

Substance	Value Level I	Range Level I	Value Level II	Range Level II
Homocysteine	10.6 µmol/l	8.44-12.7 µmol/l	19.9 µmol/l	16.0-23.9 µmol/l

Instructions

These Chromsystems plasma controls are designed to monitor the accuracy and precision of analytical procedures for the quantitative determination of Homocysteine in serum/plasma. The lyophilised controls are based on human plasma and should be used routinely according to the instructions of the assay procedure being used. While following these instructions the control is to be handled in the same manner as a patient specimen.

Reconstitution

Remove the metal seal and rubber stopper from the vial. Add exactly 2.0 ml of double distilled water (possibly HPLC-grade) into the vial. Replace the stopper and allow to sit for 10 to 15 min. Swirl the vial to dissolve the contents until homogeneity.

Storage conditions

Stored below -18 °C unopened controls are stable until the expiry date which is stated on the vial labels. The reconstituted control can be stored up to 3 days tightly capped at +2 to +8 °C. If the controls cannot be analysed within this period, they should be aliquoted and stored frozen below -18 °C (up to 1 month).

Ordering information

0071	Homocysteine Plasma Control, Bi-Level (I+II)	2 x 5 x 2 ml
0072	Homocysteine Plasma Control, Level I	5 x 2 ml
0073	Homocysteine Plasma Control, Level II	5 x 2 ml