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Endocrinology |
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| Code | Test Description * Indicates send out test |
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| L140 | Progesterone) | ||||
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| Specimen | 1 ml serum (DO NOT USE SST) | ||||
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| Method | RIA | ||||
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| Schedule | 1–2 days | ||||
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| Comments | Run on days 17–20 and 34–40 post breeding and up to 120 days. Draw samples in RT only (do not use SST tubes). Centrifuge and transfer serum to plain RT. Send to the lab chilled or frozen.) | ||||
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| * S16730 | Selenium | ||||
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| Specimen | 2 ml of heparinized or EDTA whole blood is the preferred specimen. The assay can also be performed on 2–3 grams of liver, kidney or on 1 ml of serum. | ||||
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| Method | Atomic absorption | ||||
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| Schedule | 7–10 days | ||||
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| Comments | Serum levels detect current dietary intake. Tissue levels are more accurately estimated with whole blood | ||||
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| S16760 | Testosterone | ||||
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| Specimen | 1 ml serum | ||||
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| Method | RIA | ||||
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| Schedule | 2–4 days | ||||
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| * S16850 | Vitamin E | ||||
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| Specimen | 1 ml serum | ||||
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| Method | HPLC | ||||
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| Schedule | 10–14 days | ||||
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| S85857 | Equine Granulosa Cell Tumor Panel | ||||
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| Tests | Progesterone Testosterone Inhibin |
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| Specimen | 2 ml serum and 1 ml frozen serum. Draw samples in RT only (do not use SST tubes). Centrifuge and transfer serum to plain RT. Send to the lab chilled or frozen. | ||||
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| Schedule | 3 weeks | ||||
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| L500 | Pitutitary Pars Intermedia Dusfunction (PPID) Monitoring Panel | ||||
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| Tests | Complete Equine Screen CBC Fibrinogen ACTH (endogenous level) Insulin level Total T4 |
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| Specimen | 3 ml serum separated immediately from cells, 1 BT, 1 LT, and plasma from LT containing Aprotinin | ||||
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| Schedule | 7 days | ||||
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| Comments | Use LT containing Aprotinin for sample collection, centrifuge immediately and transfer plasma to a plastic vial. (Antech will provide the necessary tubes.) Transport on ice or cold packs. Do not use any plain, uncoated glass tubes or pipettes. | ||||
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| S85530 | Testosterone Panel (4 samples) (Cryptorchids/Granulosa Cell Tumors) |
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| Specimen | 1 ml serum for pre and three post HCG samples | ||||
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| Method | RIA | ||||
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| Schedule | 2–4 days | ||||
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| Special Drawing Instructions |
Draw Pre, administer 6,000 IU HCG IV, and then draw a 20-minute post, 1-hour post, and 2-hour post | ||||
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| Comments | |||||
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| Cryptorchids | Testosterone levels for castrated males (geldings) range from 0 to 40 pg/ml. Cryptorchids range from 100 to 500 pg/ml. Stallions range from 200 to 700 pg/ml. Occasional monorchids may have borderline values ranging between 40 to 100 pg/ml. Provocative HCG stimulation testing is warranted in these cases to verify the presence of testosterone producing testicular tissue. | ||||
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| Granulosa cell tumor | The normal mare shows no significant change in baseline and post testosterone and estradiol levels. A progesterone assay is also suggested to assess possible existing luteal tissue. | ||||
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| * S17505 | Vitamin E/Selenium Panel | ||||
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| Specimen | 2 ml serum and 2 ml of EDTA or heparinized plasma | ||||
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| Method | HPLC; Atomic absorption | ||||
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| Schedule | 10–14 days | ||||
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