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E–3

Advanced Operations

To prepare dilutions greater than 1:1:

If additional dilutions beyond 1:1 are necessary, always begin with the original,

undiluted sample. Then, incrementally increase the parts saline as indicated in the

dilution chart.

Urine Dilutions

The VetTest analyzer supports urine dilutions when either the UPRO or UCRE test value

is outside the linearity range of the VetTest analyzer.

Note: Only the test value that is outside linearity needs to be diluted, not the entire

ratio.

Urine Dilution Tips

Perform a dilution only when a test value is accompanied by a greater than symbol t

PSEBTIFTPOUIFQBUJFOUSFQPSU

Use the deionized (DI) water supplied with the Urine P:C Sample Preparation Kit t

as the diluent.

For best results, start with a 1:1 dilution (1 part sample to 1 part DI water).t

Do not exceed 10 parts DI water.t

Use an accurate measuring device, such as a calibrated pipette or syringe.t

Urine Dilution Chart

Volumes are for example only. Parts Sample + Parts DI Water = Total Parts

Parts Sample Parts DI Water Total Parts (Dilution Factor)

Ú- 01

Ú- Ú- 2

Ú- Ú- 3

Ú- Ú- 

Ú- Ú- 

Ú- Ú- 

Ú- Ú- 

Ú- Ú- 8

Ú- Ú- 

Ú- Ú- 10

Ú- Ú- 11

Parts DI Water: the number entered into the VetTest when running the diluted sample

Dilution Factor: the total number of parts in the diluted sample; the VetTest automatically multiplies the result

by this number to correct for the dilution

Idexx VetTest User Manual

Questions and Answers: