Table 4.

Description of sample groups (n = 5 each) for steroid hormone validations, as well as equations used to determine matrix effects, recovery of extraction, and process efficiency for extraction of steroid hormones from walrus bone (following Caban et al48)

Group	Group definition	Test	Equation used
A	Blank samples spiked pre‐extraction with hormone concentrations along calibration curve	Matrix effects	(B/A)*100
B	Bone powder extracted and spike post‐extraction with middle standard concentrations for each hormone	Recovery of extraction	(C/B)*100
C	Bone powder spiked pre‐extraction with hormone concentrations along calibration curve	Process efficiency	(C/A)*100