{"uid":"cap_5fvlgsKdlpYtUnEJlO_ri","slug":"levothyroxine-full-replacement-dose-estimator-ata-2014-b491a868","name":"Levothyroxine Full-Replacement Dose Estimator (ATA 2014)","description":"Adult levothyroxine (LT4) full-replacement estimate: daily_lt4_mcg = weight_kg * 1.6 (ATA 2014). Weight in kg or lb. Not a prescription, TSH titration, pediatric or pregnancy-specific dose, or tablet strength. Lean-body-mass adjustment may apply; elderly and cardiac patients often start lower. Deterministic published arithmetic with citation.","url":"https://api.magentlab.com/api/calc/levothyroxine_dose","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"headers":{"type":"object","additionalProperties":{"type":"string"}},"queryParams":{"type":"object","required":[],"properties":{"weight_kg":{"type":"number","description":"Weight in kilograms (1-500). Provide weight_kg or weight_lb."},"weight_lb":{"type":"number","description":"Weight in pounds (2-1100). Converted as kg = lb * 0.45359237."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_3vsjaCgpIIe_L7vlKnn5I","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Calculates the adult full-replacement levothyroxine (LT4) daily dose in micrograms using the ATA 2014 formula: weight_kg × 1.6, accepting weight in kg or lb.","exampleAgentPrompt":"What's the estimated full-replacement levothyroxine dose for an adult patient weighing 70 kg, using the ATA 2014 formula?","exampleUseCases":[{"title":"Full replacement dose for post-thyroidectomy patient","prompt":"My patient just had a total thyroidectomy and weighs 68 kg — what's the estimated full-replacement levothyroxine dose per the ATA 2014 guideline?"},{"title":"LT4 dose estimate using pounds","prompt":"Can you calculate the full-replacement levothyroxine daily dose for a 185-pound adult using the standard weight-based formula?"},{"title":"Cross-check clinical dosing arithmetic","prompt":"I want to verify the levothyroxine full-replacement dose for an 80 kg hypothyroid adult — use the ATA 2014 1.6 mcg/kg formula and tell me the result in micrograms."}],"resultDescription":"Returns the estimated full-replacement levothyroxine daily dose in micrograms, computed as weight_kg × 1.6 per the ATA 2014 guideline. Includes the citation and notes that this is not a prescription, does not account for TSH titration, lean body mass adjustment, pediatric or pregnancy-specific dosing, or tablet rounding.","failureModes":["Weight out of accepted range (weight_kg < 1 or > 500; weight_lb < 2 or > 1100) returns validation error","Neither weight_kg nor weight_lb provided returns missing parameter error","Non-numeric weight value returns type error","Payment not included or insufficient USDC results in 402 payment required"],"whenToPreferThis":"Choose this endpoint when you need a quick, deterministic, evidence-based levothyroxine full-replacement estimate grounded in the published ATA 2014 arithmetic (1.6 mcg/kg). Prefer it over general LLM reasoning when reproducibility and citation traceability matter. Not suitable for titration-based dosing, pediatric patients, pregnancy, or when lean body mass adjustment is required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T01:21:01.540Z","isFirstParty":false}