TABLE 1.
Timepoint‐specific sample sizes, median concentrations of SDMA and sCr, and reference interval upper limits with their 95% CI for mares and foals
| Time point | Foal | Mare | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| N | Median concentrations | Upper limit of RI | N | Median concentrations | Upper limit of RI | |||||
| SDMA μg/dL (range) | sCr mg/dL (range) | SDMA μg/dL (95% CI) | sCr mg/dL (95% CI) | SDMA μg/dL (range) | sCr mg/dL (range) | SDMA μg/dL (95% CI) | sCr mg/dL (95% CI) | |||
| −14 to − 31 d | – | – | – | – | – | 33 | 10 (8‐17) | 1.2 (1.0‐1.9) | 15 (12‐17) | 1.7 (1.5‐1.9) |
| −13 to − 7 d | – | – | – | – | – | 28 | 10 (6‐20) | 1.2 (0.8‐1.8) | 14 (11‐20) | 1.6 (1.3‐1.8) |
| −6 to − 1 d | – | – | – | – | – | 18 | 9 (5‐19) | 1.2 (0.7‐1.5) | 14 (12‐19) | 1.5 (1.3‐1.5) |
| Birth | 112 | 70 (7‐100) | 1.8 (1‐7.9) | 100 (100‐100) | 2.9 (2.6‐3.9) | 79 | 10 (3‐20) | 1.0 (0.6‐2.2) | 14 (13‐19) | 1.6 (1.3‐1.9) |
| 1‐4 d | 87 | 49 (5‐100) | 1.1 (0.6‐3.3) | 85 (74‐96) | 1.4 (1.3‐1.9) | 61 | 9 (2‐20) | 0.8 (0.6‐1.4) | 13 (11‐15) | 1.1 (1.0‐1.3) |
| 5‐10 d | 80 | 26 (5‐37) | 0.9 (0.5‐1.5) | 36 (33‐37) | 1.1 (1.1‐1.2) | 61 | 8 (3‐17) | 0.8 (0.6‐1.6) | 12 (10‐16) | 1.2 (1.0‐1.2) |
| 20+ d | 78 | 18 (6‐27) | 1.0 (0.6‐2.0) | 24 (22‐27) | 1.5 (1.3‐1.7) | 54 | 7 (1‐15) | 0.8 (0.6‐1.1) | 11 (9‐13) | 1.0 (0.9‐1.1) |
Abbreviations: CI, confidence interval; RI, reference interval; sCr, serum creatinine; SDMA, symmetric dimethylarginine.