Each collected sample should be taken in small portions from at least four to five different locations of the scalp. The recommended areas for collection are the nape of the neck, posterior vertex and posterior temporal regions.
Note: All reference range correlations, dietary recommendations and interpretive report content assumes that the complete hair specimen originated solely from the above defined regions of the scalp.
High-grade stainless steel scissors or thinning shears should be used to cut the hair as close to the scalp as possible. The length of the collected hair should not exceed one and one-half inches. The proximal portion (one and one-half inches closest to the root) should be retained and the excess discarded.
Note: The proximal portion is reflective of the most recent metabolic activity.
The weight requested for a hair specimen is 125 milligrams (0.125 Gram). Use of the TEI Hair Weight Scale Cards will ensure the collection of sufficient sample weight. However, if a Hair Weight Scale is not available, one full teaspoon should approximate the weight requirement.
Upon cutting the sample, the hair should be placed directly into a clean hair specimen envelope normally provided by the laboratory and then sealed with the glue flap only. Do not use plastic bags in place of the standard paper envelopes to hold the hair specimen. In addition, do not use staples, paper clips, adhesive tape, aluminum foil, or other metal and paper material of any kind to seal, secure or wrap the hair envelope and/or the hair specimen contained within.
Each sample specimen must be accompanied by a standard HTMA Laboratory Submittal Form, completed in its entirety. This will be sent out to you in your booking confirmation email.