Amino Acid Profiles

Frequently asked questions

1. What is the minimum specimen requirement for this test?

• Plasma – 1mL
• Bloodspot - Four spots of blood the size of a standard hole punch completely filled and completely soaked through to the other side of the collection card
• Urine – there is no minimum specimen requirement as it is a 24hr. urine collection. For accurate results, no collections should be missed during the 24hr. period

2. My bloodspot test went outside the circles on the collection card, is this okay?
Yes. As long as you have filled the circles and the blood has soaked through to both sides, it does not matter if the specimen goes outside of the lines.

3. How long do I have once the specimen is collected to get it to the laboratory? (Please see proper specimen storage under the “Shipping” section)

• Plasma – within 14 days of collection
• Bloodspot – within 4 days of collection
• Urine – within 14 days of collection

4. What is the difference between the urine amino acid and the plasma amino acid test?
Plasma levels of amino acids reveal more information regarding long-term nutritional status. Plasma analysis is the preferred way to assess essential amino acid status as it allows a direct look at the supply line from tissue stores. Also, by using plasma to assess amino acid status, you avoid potential errors in reading volumes that exist with urine collection.

Urine amino acid assessments aid in the detection of metabolic disorders due to genetic polymorphisms, micronutrient deficiencies or toxic abnormalities, all of which can interfer with amino acid utilization. Urine is more influenced by recent dietary intake and is not a good indicator of long term status.

5. How often should I retake the plasma amino test to make sure my supplements are still valid?
You should monitor your amino status every six months or sooner per your healthcare provider's orders in order to adjust your amino acid formula. Your needs are likely to change after using the powder for a certain amount of time.

6. Why don't you add tyrosine to the amino acid formula?
Because it is made in your body from the essential amino acid phenylalanine, which is included in the formula.

7. Where can I get my customized vitamin/mineral formula?
You can check with your local compounding pharmacist to see if they are able to compound the formula for you. If you would prefer, you can use Custom Nutraceuticals, a company specializing in nutritional formulas and supplements. They can be reached at 02 9966 9990.