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Endocrinology |
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| Code | Test Description * Indicates send out test |
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| T447 | Dexamethosone Suppression Test (2 samples) | ||||
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| Specimen | 1 ml separated serum or heparinized plasma for each pre and post | ||||
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| Method | RIA | ||||
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| Schedule | 1–2 days | ||||
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| Indication | Dexamethasone suppression series are used to help identify pituitary adenomas of the pars intermedia. | ||||
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| Special Drawing Instructions |
OVERNIGHT DEXAMETHASONE SUPPRESSION (2 Samples) Day One – pre PM sample (after 5:00 PM) administer 40mg Dexamethasone Sodium Phosphate IM Day Two – post AM sample (9:00 AM) |
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| S16295 | Estradiol | ||||
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| Specimen | 1 ml serum | ||||
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| Method | RIA | ||||
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| Schedule | 3–7 days | ||||
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| Comments | Run after 120 post breeding +/- progesterone level (See page 20 and the reproductive testing chart for testing guidelines.) | ||||
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| *S16300 | Estrone Sulfate | ||||
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| Specimen | 1 ml serum | ||||
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| Method | ELISA | ||||
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| Schedule | 7–10 days | ||||
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| Indication | Estrone sulfate is a hormone produced by the fetoplacental unit. It is an indication of pregnancy and fetal well being. | ||||
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| Comments | This test is diagnostic for equines only. Collect serum at least 100 days after breeding. | ||||
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| *S4131 | Inhibin | ||||
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| Specimen | 1 ml frozen or cold serum (send to the lab on ice) | ||||
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| Schedule | 3 weeks | ||||
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| T470 | Insulin w/ Glucose | ||||
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| Tests | Insulin, Glucose | ||||
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| Method | Insulin level obtained by radioimmunoassay. Glucose level obtained by enzymatic method. | ||||
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| Specimen | 1 ml serum or heparinized plasma separated immediately from cells | ||||
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| Schedule | 1–4 days | ||||
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| Comments | Elevated insulin levels in the face of euglycemia supports insulin resistance and antagonism commonly observed with adenomas of the pars intermedia lobe of the pituitary gland. | ||||
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| S16370 | Insulin-Like Growth Factor-1 (IGF-1) | ||||
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| Specimen | 2 ml plasma from plastic LT. | ||||
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| Method | RIA | ||||
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| Schedule | 7–10 days | ||||
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| Comments | Use chilled plastic LT containing for sample collection, centrifuge immediately and
transfer plasma to a plastic vial. Transport on ice or cold packs. Do not use any plain, uncoated glass
tubes or pipettes. IGF-1 levels parallel growth hormone levels and are used as an indicator of insulin resistance and growth hormone responsive reproductive disorders. |
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| S16595 | Parathyroid Hormone and Ionized Calcium Panel | ||||
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| Specimen | PTH - 1 ml frozen or cold serum (send to the lab on ice) Ionized Calcium - 1 ml serum. Anaerobically transfer serum from a spun SST or RT (use a needle and syringe to avoid air exposure) into a plain RT. Please boldly label the RT as "Serum" and freeze. Send to lab on ice packs. |
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| Method | RIA | ||||
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| Schedule | 3–5 days | ||||
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| Comments | PTH levels are used to evaluate calcium homeostasis, primary hyperparathyroidism,
secondary renal disease/hyperparathyroidism, hypercalcemia and hypocalcemia. Ionized Calcium can be artifactually decreased (Ca2+) if exposed to air when drawn. The test can also be artifactually increased (Ca2+) if transported by SST. |
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| S16635 | PMSG, Pregnant Mare Serum Gonadotrophin | ||||
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| Specimen | 2 ml serumPlasma from LT containing Aprotinin. | ||||
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| Method | ELISA | ||||
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| Schedule | 3–7 days | ||||
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| Comments | Run on days 45–120 post breeding in conjunction with progesterone levels. (See page 20 and the reproductive testing chart for testing guidelines.) | ||||
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