calc_analytic_css_3compss: Calculate the analytic steady state concentration for the...

View source: R/calc_analytic_css_3compss.R

calc_analytic_css_3compssR Documentation

Calculate the analytic steady state concentration for the three compartment steady-state model

Description

This function calculates the analytic steady state plasma or venous blood concentrations as a result of infusion dosing.

Usage

calc_analytic_css_3compss(
  chem.name = NULL,
  chem.cas = NULL,
  dtxsid = NULL,
  parameters = NULL,
  hourly.dose = 1/24,
  concentration = "plasma",
  suppress.messages = FALSE,
  recalc.blood2plasma = FALSE,
  tissue = NULL,
  restrictive.clearance = TRUE,
  bioactive.free.invivo = FALSE,
  ...
)

Arguments

chem.name

Either the chemical name, CAS number, or the parameters must be specified.

chem.cas

Either the chemical name, CAS number, or the parameters must be specified.

dtxsid

EPA's 'DSSTox Structure ID (https://comptox.epa.gov/dashboard) the chemical must be identified by either CAS, name, or DTXSIDs

parameters

Chemical parameters from parameterize_pbtk (for model = 'pbtk'), parameterize_3comp (for model = '3compartment), parameterize_1comp(for model = '1compartment') or parameterize_steadystate (for model = '3compartmentss'), overrides chem.name and chem.cas.

hourly.dose

Hourly dose rate mg/kg BW/h.

concentration

Desired concentration type, 'blood' or default 'plasma'.

suppress.messages

Whether or not the output message is suppressed.

recalc.blood2plasma

Recalculates the ratio of the amount of chemical in the blood to plasma using the input parameters. Use this if you have 'altered hematocrit, Funbound.plasma, or Krbc2pu.

tissue

Desired tissue concentration (defaults to whole body concentration.)

restrictive.clearance

If TRUE (default), then only the fraction of chemical not bound to protein is available for metabolism in the liver. If FALSE, then all chemical in the liver is metabolized (faster metabolism due to rapid off-binding).

bioactive.free.invivo

If FALSE (default), then the total concentration is treated as bioactive in vivo. If TRUE, the the unbound (free) plasma concentration is treated as bioactive in vivo. Only works with tissue = NULL in current implementation.

...

Additional parameters passed to parameterize function if parameters is NULL.

Value

Steady state plasma concentration in mg/L units

Author(s)

Robert Pearce and John Wambaugh

References

Pearce, Robert G., et al. "Httk: R package for high-throughput toxicokinetics." Journal of statistical software 79.4 (2017): 1.

See Also

calc_analytic_css

parameterize_steadystate


httk documentation built on March 7, 2023, 7:26 p.m.