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Glucocorticoid Steroid Dose Converter (Meikle 1977)
x402
Glucocorticoid Steroid Dose Converter (Meikle 1977) is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Converts a glucocorticoid milligram dose between hydrocortisone, prednisone, and dexamethasone using the Meikle 1977 equivalency ratios (20:5:0.75).
Price / call$0.005
Success—
StatusUnknown
How this service works
Convert a glucocorticoid milligram dose among hydrocortisone, prednisone, and dexamethasone using Meikle 1977 equivalent doses (20 : 5 : 0.75). Not a taper, stress-dose protocol, or regimen recommendation; mineralocorticoid activity is not converted. Deterministic published table with citation.
Output
Returns the equivalent dose in the target glucocorticoid in milligrams, calculated using the Meikle 1977 published equivalency ratios (hydrocortisone 20 : prednisone 5 : dexamethasone 0.75), along with the source and target drug names and the authoritative citation.
Example use cases
Prednisone to dexamethasone crossover
“I need to switch a patient from 60mg prednisone to dexamethasone — what's the equivalent dexamethasone dose based on the Meikle equivalency ratios?”
Hydrocortisone stress dosing reference check
“We're documenting a patient on 100mg hydrocortisone — what would the equivalent prednisone dose be so I can note it for the care team?”
Dexamethasone back-calculation to prednisone
“A patient received 4mg dexamethasone — what's that in prednisone milligrams so I can document the glucocorticoid exposure in prednisone-equivalent terms?”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/steroid_conversionWhen to prefer
Choose this endpoint when you need a deterministic, citation-backed glucocorticoid dose equivalency calculation among hydrocortisone, prednisone, and dexamethasone. It is ideal for clinical documentation, pharmacy reconciliation, or agent workflows requiring a published reference (Meikle 1977) rather than an LLM estimate. Do not use it for taper schedules, stress-dose protocols, mineralocorticoid equivalency, or steroids outside the three supported drugs.
Side effects
- Invalid 'from' or 'to' steroid name not in the enum (hydrocortisone, prednisone, dexamethasone) returns an error
- dose_mg outside allowed range (0.1–5000 mg) returns a validation error
- Same drug specified for both 'from' and 'to' may return a trivial 1:1 result or an error
- Missing required query parameters returns a 400-level error
- Network or payment failure returns no result
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"path": "/api/calc/steroid_conversion",
"count": 2,
"items": [
{
"to": "prednisone",
"from": "hydrocortisone",
"dose_mg": 20,
"formula": "steroid_conversion",
"citation": {
"id": "meikle-1977",
"doi": "10.1016/0002-9343(77)90233-9",
"title": "Potency and duration of action of glucocorticoids. Effects of hydrocortisone, prednisone and dexamethasone on human pituitary-adrenal function",
"source": "Am J Med. 1977;63(2):200-207",
"authors": "Meikle AW, Tyler FH"
},
"disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
"to_equivalent_mg": 5,
"equivalent_dose_mg": 5,
"formula_expression": "equivalent_dose_mg = dose_mg * (to_equivalent_mg / from_equivalent_mg); hydrocortisone 20 mg = prednisone 5 mg = dexamethasone 0.75 mg (Meikle 1977)",
"from_equivalent_mg": 20
},
{
"to": "prednisone",
"from": "hydrocortisone",
"dose_mg": 20,
"formula": "steroid_conversion",
"citation": {
"id": "meikle-1977",
"doi": "10.1016/0002-9343(77)90233-9",
"title": "Potency and duration of action of glucocorticoids. Effects of hydrocortisone, prednisone and dexamethasone on human pituitary-adrenal function",
"source": "Am J Med. 1977;63(2):200-207",
"authors": "Meikle AW, Tyler FH"
},
"disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
"to_equivalent_mg": 5,
"equivalent_dose_mg": 5,
"formula_expression": "equivalent_dose_mg = dose_mg * (to_equivalent_mg / from_equivalent_mg); hydrocortisone 20 mg = prednisone 5 mg = dexamethasone 0.75 mg (Meikle 1977)",
"from_equivalent_mg": 20
}
]
}
}Tags
x402
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