The % collagen yield test is performed on a small sub-sample of the submitted bone.
It is determined without the alkali pretreatment step since the alkali reduces the collagen content significantly while removing contamination and gives false % collagen yield results.
The location of this contamination within the skeletal material is rarely investigated, hampering development of improved radiocarbon pretreatment methods.
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Teeth – For human teeth, preferred samples are single complete incisor or canine. For animal teeth, the sample size depends on the animal. For small animals, please consult the lab regarding the appropriate quantity.
Antlers – Chunks, chips, and shavings are best for radiocarbon dating.
If your samples are already powderized, please contact us for discussion.
We accept extracted bone collagen for radiocarbon dating.
It is rarely possible to directly radiocarbon date skeletal remains from hot environments as collagen rapidly degrades.
Although able to survive in the majority of burial environments for longer, unburnt biological apatites frequently produce inaccurate radiocarbon dates due to contamination from carbonate in the groundwater.
Bones that have been drilled or powdered prior to submission to the laboratory may not lend themselves to a robust pretreatment that can ensure the accuracy of the results.
We DO NOT recommend that bones be drilled or powdered prior to sending to our laboratory.
– Fees are inclusive of d13C measurements, d15N measurements (except cremated bones), quality assurance reports, calendar calibration when applicable, and 24/7 web access to past results and pending analyses.
Additional fee is charged for collagen or bone carbonate extraction.
– It is important to understand the pretreatment applied to samples since they directly affect the final result.