Item Value
Test name Quantitative Amino Acids, Plasma (to Stanford, see Utilization Guidelines)
Available Stat? No, however, in exceptional circumstances when there is a need for rapid testing, courier transport to Stanford can be arranged (see 'Processing notes')
Turn around times Set up as needed, at least 2x a week.
Turnaround time: One week.
Performed by Lucille-Packard Children's Hospital
Patient Preparation A 4 hour fast before specimen collection is preferred. If the patient has not been fasting indicate that on the test order.

The test request should be accompanied by a brief clinical history, the tentative diagnosis, and a listing of drugs, x-rays, infant formula or dietary therapy administered within the previous 3 days.
Normal range See report
Container type Dark Green top or Light Green top
Amount to Collect 2 mL blood
Collection Instructions If a disorder of the urea cycle is suspected, specify that the laboratory should look for argininosuccinic acid, as well. If abnormal, will comment if present. Call for phone consult with Dr. Tina Cowan (650) 724-7858
Sample type Heparinized plasma, serum acceptable

If you have additional questions regarding this test, please call: 415-353-1667