The SIBS Laboratory at Texas A&M University provides stable isotope analyses for researchers on and off campus.

Registration to the Texas A&M AgriLife system is required for new users for payment. See "Payment" page.



Per-sample rates (in US$)

Please click each analysis service for details (A&M rate: rates for Texas A&M students, faculty, and staff).

Rates are also available for non-academic institutions and could be negotiable. Contact Dr. Ayumi Hyodo ( for more information.

Rush analysis rates are available (a surcharge of 75%).


Analysis A&M rate Non-A&M (academic rate) Current turnaround time
d13C, d15N, %C, %N (solid) $8.00 $9.90 1-2 weeks for 1-80 samples*
%C, %N only (no isotope results) $5.00 $6.00 1-2 weeks for 1-80 samples*
d2H and d18O of water $12.00 $16.00 1 week for 1-70 samples
d2H of keratin, or d18O of solid $13.00 $19.00 2 weeks for 1-50 samples**
d34S and %S of solid $14.00 $18.75 1-2 weeks for 1-50 samples
d2H or d13C of n-alkane Coming soon Coming soon  
    (*When packed samples are sent **Due to drying & equilibrium processes)
Acid treatment $5.00 $7.00  
Weighing $3.00 $4.50  
Grinding $3.00 $4.50  
Water extraction $8.00 $12.00  
Use of microbalance, ball mill, or freezer mill $0.50    
Special Technician Service (per hour) $50.00    

Contact Us

Dept. of Ecosystem Science and Management
Rm 215 Kleberg Center
2126 TAMU, Texas A&M University
College Station TX 77843-2126

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