About 0.5g of hair cut close to the scalp from the back of the head, or nape of the neck is required (about 1 heaped tablespoon full). It is helpful if our yellow Hair Mineral Analysis request form is sent with the hair sample (see Appendix C). The following trace and toxic metals are measured: Ca, Mg, P, K, Na, Fe, Cu, Zn, Cr, Mn, Se, Ni, Co, Pb, Hg, Cd, As & Al.
Please cut the hair from the back of the head, or nape of the neck, close to the scalp. At least 0,.5 grammes of hair is required (about one heaped tablespoon full).
Only the hair up to 1.5" (4cm) from the scalp can be used.